NA1-11-PN

929 FIBER SENSORS Small / Slim Object Detection Area Sensor NA1-11 Related Information ■■General terms and conditions.............. F-3 ■■Glossary of terms........................ P.1549~ ■■Selection guide...............................P.865~ ■■General precautions.................... P.1552~ LASER SENSORS PHOTOELECTRIC SENSORS Recognition (Excluding 5 m cable length type) MICRO PHOTOELECTRIC SENSORS AREA SENSORS SAFETY LIGHT CURTAINS / SAFETY COMPONENTS PRESSURE / FLOW SENSORS INDUCTIVE PROXIMITY SENSORS PARTICULAR USE SENSORS Make sure to use safety light curtains when using a sensing device for personnel protection. Refer to p.455~ for details of safety light curtains. SENSOR OPTIONS SIMPLE WIRE-SAVING UNITS WIRE-SAVING SYSTEMS MEASUREMENT SENSORS panasonic.net/id/pidsx/global STATIC CONTROL DEVICES LASER MARKERS PLC HUMAN MACHINE INTERFACES ENERGY MANAGEMENT SOLUTIONS FA COMPONENTS Cross-beam scanning system to detect slim objects Letters or business cards detectable! Emitting and receiving element pitch: 10 mm 0.394 in Slim objects can be detected by the cross-beam scanning system. A minimum sensing object size of ø13.5 mm ø 0.531 in can be detected by an emitting and receiving element pitch of 10 mm 0.394 in. Wide area Just 10 mm 0.394 in thick Though being extremely slim, it has a wide sensing area of 1 m 3.281 ft length and 100 mm 3.937 in width. It is most suitable for object detection on a wide assembly line, or for detecting the dropping or incursion of small objects whose travel path is uncertain. It is extremely slim, being just 10 mm 0.394 in thick. Further, it can be mounted in a narrow space as you can select from two cable orientation directions. MACHINE VISION SYSTEMS UV CURING SYSTEMS Selection Guide Liquid Leak Detection Liquid Level Detection Water Detection Color Mark Detection Wafer Detection Ultrasonic Small / Slim Object Detection Obstacle Detection NA1-11 PNP output type available 1m 3.281 ft mm 100 37 in 9 . 3 It is possible to select from two cable orientation directions. Globally usable It conforms to the EMC Directive and the UL Recognition. Moreover, PNP output type, which is much in demand in Europe, is also available. Small / Slim Object Detection Area Sensor NA1-11 APPLICATIONS 930 FIBER SENSORS Detecting post-cards Detecting falling objects whose path is uncertain Detecting the edges of moving objects LASER SENSORS PHOTOELECTRIC SENSORS MICRO PHOTOELECTRIC SENSORS AREA SENSORS SAFETY LIGHT CURTAINS / SAFETY COMPONENTS PRESSURE / FLOW SENSORS INDUCTIVE PROXIMITY SENSORS PARTICULAR USE SENSORS WARNING SENSOR OPTIONS Never use this product in any personnel safety application. SIMPLE WIRE-SAVING UNITS No synchronization wire Clearly visible large indicator WIRE-SAVING SYSTEMS Wiring is saved and made simple as no synchronization wire is required between the emitter and the receiver. A clearly visible large indicator, having a 55 mm 2.165 in width, is incorporated on both the emitter and the receiver. Further, if the sensing output is directly connected to the large indicator input, the indicator can be conveniently used as a large operation indicator. Moreover, its operation is selectable between lighting or blinking. MEASUREMENT SENSORS STATIC CONTROL DEVICES LASER MARKERS PLC HUMAN MACHINE INTERFACES ENERGY MANAGEMENT SOLUTIONS FA COMPONENTS 55 mm 2.165 in MACHINE VISION SYSTEMS UV CURING SYSTEMS Cross-beam Scanning System In a conventional area sensor, slim objects cannot be detected since the emitting and the receiving elements are scanned synchronously as a set. In contrast, in NA1-11, only the elements 1 to 11 of the emitter are scanned to obtain emission. The elements of the receiver are not scanned, so that when element 1 of the emitter emits light, all the elements of the receiver receive light. Hence, even if there is one element on the receiver which does not receive light, it results in light interrupted operation. With this technique, detection of slim objects is possible. NA1-11 Emitter Receiver Ultrasonic Non-scanning Scanning Scanning Scanning Conventional area sensor Emitter Selection Guide Liquid Leak Detection Liquid Level Detection Water Detection Color Mark Detection Wafer Detection Receiver Small / Slim Object Detection Obstacle Detection NA1-11 931 FIBER SENSORS Small / Slim Object Detection Area Sensor NA1-11 ORDER GUIDE LASER SENSORS PHOTOELECTRIC SENSORS MICRO PHOTOELECTRIC SENSORS AREA SENSORS SAFETY LIGHT CURTAINS / SAFETY COMPONENTS PRESSURE / FLOW SENSORS INDUCTIVE PROXIMITY SENSORS Type Appearance Sensing range (Note1) Model No.(Note2) Output NA1-11 NPN output Sensing height: 100 mm 3.937 in 5 m 16.404 ft cable length No. of elements per emitter / receiver: 11 PNP output NPN open-collector transistor 0.17 to 1 m 0.558 to 3.281 ft Element pitch: 10 mm 0.394 in NA1-11-C5 NA1-11-PN PNP open-collector transistor Notes: 1) The sensing range is the possible setting distance between the emitter and the receiver. Receiver cannot be placed in this range PARTICULAR USE SENSORS 1 m 3.281 ft Actual sensing range of the sensor 0.17 m 0.558 ft Setting range of the receiver SENSOR OPTIONS SIMPLE WIRE-SAVING UNITS WIRE-SAVING SYSTEMS MEASUREMENT SENSORS STATIC CONTROL DEVICES LASER MARKERS 2) The model No. with suffix “P” shown on the label affixed to the product is the emitter, “D” shown on the label is the receiver. OPTIONS Designation Model No. PLC HUMAN MACHINE INTERFACES ENERGY MANAGEMENT SOLUTIONS FA COMPONENTS MACHINE VISION SYSTEMS UV CURING SYSTEMS Receiver Emitter Receiver Sensor mounting bracket MS-NA1-1 MS-NA2-1 Description Sensor mounting bracket • MS-NA1-1 Four bracket set Four M4 (length 15 mm 0.591 in) screws with washers, eight nuts, four hooks, four spacers and eight M4 (length 18 mm 0.709 in) screws with washers are attached. (Spacers are not attached with MS-NA1-1.) M4 screws with washers, nuts and hooks are attached. • MS-NA2-1 Selection Guide Liquid Leak Detection Liquid Level Detection Water Detection Color Mark Detection Wafer Detection Ultrasonic Small / Slim Object Detection Obstacle Detection NA1-11 M4 screws with washers, nuts, hooks and spacers are attached. Small / Slim Object Detection Area Sensor NA1-11 SPECIFICATIONS Type Item Model No. FIBER SENSORS NPN output PNP output NA1-11 NA1-11-PN CE marking directive compliance EMC Directive, RoHS Directive Sensing height Sensing range (Note 2) 0.17 to 1 m 0.558 to 3.281 ft Element pitch ø13.5 mm ø0.531 in or more opaque object (Note 3) Supply voltage 12 to 24 V DC ±10 %   Ripple P-P 10 % or less Current consumption PRESSURE / FLOW SENSORS INDUCTIVE PROXIMITY SENSORS Emitter: 80 mA or less, Receiver: 100 mA or less NPN open-collector transistor • Maximum sink current: 100 mA • Applied voltage: 30 V DC or less (between output and 0 V) • Residual voltage: 1 V or less (at 100 mA sink current) 0.4 V or less (at 16 mA sink current) Utilization category PNP open-collector transistor • Maximum source current: 100 mA • Applied voltage: 30 V DC or less (between output and +V) • Residual voltage: 1 V or less (at 100 mA source current) 0.4 V or less (at 16 mA source current) DC-12 or DC-13 Output operation ON or OFF when beam channel is interrupted, selectable by operation mode switch Short-circuit protection Incorporated Response time In Dark state: 5 ms or less, In Light state: 10 ms or less Power indicator: Green LED (lights up when the power is ON) Large indicator: Orange LED lights up or blinks when the large indicator input is High, lighting pattern is selected by operation mode switch Receiver Operation indicator: Orange LED (lights up when the output is ON) Operation indicator: Orange LED (lights up when the output is ON) Power indicator: Green LED (lights up when the power is ON) Power indicator: Green LED (lights up when the power is ON) Large indicator: Orange LED lights up or blinks when the Large indicator: Orange LED lights up or blinks when the large indicator input is Low, large indicator input is High, lighting pattern is selected lighting pattern is selected by operation mode switch by operation mode switch Indicators Emitter Power indicator: Green LED (lights up when the power is ON) Large indicator: Orange LED lights up or blinks when the large indicator input is Low, lighting pattern is selected by operation mode switch Pollution degree Environmental resistance SAFETY LIGHT CURTAINS / SAFETY COMPONENTS 11 Nos. each on the emitter and the receiver, respectively Sensing object 3 (Industrial environment) Protection –10 to 55 °C +14 to +131 °F (No dew condensation or icing allowed), Storage: –20 to +70 °C –4 to +158 °F Ambient humidity 35 to 85 % RH, Storage: 35 to 85 % RH Ambient illuminance SENSOR OPTIONS SIMPLE WIRE-SAVING UNITS WIRE-SAVING SYSTEMS MEASUREMENT SENSORS STATIC CONTROL DEVICES LASER MARKERS PLC HUMAN MACHINE INTERFACES ENERGY MANAGEMENT SOLUTIONS FA COMPONENTS UV CURING SYSTEMS Incandescent light: 3,000 ℓx or less at the light-receiving face Voltage withstandability 1,000 V AC for one min. between all supply terminals connected together and enclosure Insulation resistance 20 MΩ, or more, with 250 V DC megger between all supply terminals connected together and enclosure Vibration resistance 10 to 150 Hz frequency, 1.5 mm 0.059 in double amplitude in X, Y and Z directions for two hours each 500 m/s acceleration (50 G approx.) in X, Y and Z directions three times each Shock resistance 2 Emitting element Material Cable Cable extension Weight Liquid Leak Detection Liquid Level Detection Water Detection Enclosure: Heat-resistant ABS, Lens: Acrylic, Indicator cover: Acrylic Color Mark Detection 0.3 mm2 4-core (emitter: 3-core) oil resistant cabtyre cable, 2 m 6.562 ft long Wafer Detection Extension up to total 100 m 328.084 ft is possible, for both emitter and receiver, with 0.3 mm , or more, cable. Ultrasonic Net weight: Emitter 80 g approx., Receiver 85 g approx, Gross Weight: 210 g approx. Small / Slim Object Detection Notes: 1) Where measurement conditions have not been specified precisely, the conditions used were an ambient temperature of +23 °C +73.4 °F. 2) The sensing range is the possible setting distance between the emitter and the receiver. 1 m 3.281 ft Actual sensing range of the sensor 0.17 m 0.558 ft Setting range of the receiver Emitter Receiver Selection Guide Infrared LED (Peak emission wavelength: 880nm 0.035mil, cross-beam scanning system) 2 Receiver cannot be placed in this range PARTICULAR USE SENSORS MACHINE VISION SYSTEMS IP62 (IEC) Ambient temperature PHOTOELECTRIC SENSORS AREA SENSORS 10 mm 0.394 in Number of emitting/receiving elements LASER SENSORS MICRO PHOTOELECTRIC SENSORS 100 mm 3.937 in Output 932 Receiver 3) Although this product can detect slim objects by using the cross-beam scanning system, the size of the slim object which can be stably detected differs with the setting distance. When this sensor is used to detect slim objects, make sure to confirm stable detection using the actual objects. Obstacle Detection NA1-11 933 Small / Slim Object Detection Area Sensor I/O CIRCUIT AND WIRING DIAGRAMS FIBER SENSORS LASER SENSORS PHOTOELECTRIC SENSORS NA1-11 NPN output type I/O circuit diagram (Brown) +V Sensor circuit AREA SENSORS SAFETY LIGHT CURTAINS / SAFETY COMPONENTS PRESSURE / FLOW SENSORS D SIMPLE WIRE-SAVING UNITS (Black) Output (Note 1) Tr ZD Large indicator lighting/blinking circuit Load 100 mA max. (Blue) 0 V (Pink) Input + - 12 to 24 V DC ±10 % Color code *1 Brown Black (Note 1) E INDUCTIVE PROXIMITY SENSORS SENSOR OPTIONS Wiring diagram Color code MICRO PHOTOELECTRIC SENSORS PARTICULAR USE SENSORS NA1-11 Internal circuit Users’ circuit * 1 PLC or • Input Low (0 to 2 V): Lights up or blinks High (5 to 30 V, or open): Lights off PNP output type I/O circuit diagram Wiring diagram Color code Sensor circuit (Brown) +V ENERGY MANAGEMENT SOLUTIONS FA COMPONENTS MACHINE VISION SYSTEMS ZD Tr D Large indicator lighting/blinking circuit 100 mA max. + (Black) Output (Note 1) Load (Blue) 0 V - (Pink) Input 12 to 24 V DC ±10 % *1 Black (Note 1) Load Internal circuit * 1 Water Detection Pink Non-voltage contact or PNP open-collector transistor Symbols … D : Reverse supply polarity protection diode ZD: Surge absorption zener diode Tr : PNP output transistor E : Large indicator (INDICATOR) Liquid Level Detection Color Mark Detection or • Input Low (4 V or more): Lights up or blinks High (0 to 0.6 V, or open): Lights off Wafer Detection Ultrasonic SENSING CHARACTERISTICS (TYPICAL) Small / Slim Object Detection Correlation between setting distance and excess gain 100 Excess gain 50 10 5 1 0 1 3 4 5 2 3.281 6.562 9.843 13.123 16.404 Setting distance L (m ft) + - 12 to 24 V DC ±10 % Blue Users’ circuit Notes: 1) The emitter does not incorporate the output (black). 2) Unused wires must be insulated to ensure that they do not come into contact with wires already in use. Liquid Leak Detection NA1-11 Color code Brown E UV CURING SYSTEMS Obstacle Detection Notes: 1) T  he emitter does not incorporate the black lead wire. 2) U  nused wires must be insulated to ensure that they do not come into contact with wires already in use. NA1-11-PN HUMAN MACHINE INTERFACES Selection Guide *1 Pink Non-voltage contact or NPN open-collector transistor STATIC CONTROL DEVICES LASER MARKERS 12 to 24 V DC ±10 % Blue Symbols … D : Reverse supply polarity protection diode ZD: Surge absorption zener diode Tr : NPN output transistor E : Large indicator (INDICATOR) MEASUREMENT SENSORS + - Notes: 1) The emitter does not incorporate the output (black). 2) Unused wires must be insulated to ensure that they do not come into contact with wires already in use. WIRE-SAVING SYSTEMS Load *1 Notes: 1) T  he emitter does not incorporate the black lead wire. 2) U  nused wires must be insulated to ensure that they do not come into contact with wires already in use. Small / Slim Object Detection Area Sensor NA1-11 934 SENSING CHARACTERISTICS (TYPICAL) FIBER SENSORS Parallel deviation Vertical direction Emitter angular deviation Receiver Receiver Vertical direction Emitter Emitter Horizontal direction ℓ Receiver Receiver ℓ Emitter Emitter Setting distance L (m ft) ℓ 1 3.281 PHOTOELECTRIC SENSORS Receiver Receiver θ L θ L Horizontal direction Emitter Emitter 0.5 1.640 Receiver angular deviation Receiver Receiver 0 0 400 200 400 200 15.748 7.874 7.874 15.748 (Down) Left Center Right (Up) Operating point ℓ (mm in) Setting distance L (m ft) ℓ LASER SENSORS Angular deviation MICRO PHOTOELECTRIC SENSORS 1 3.281 AREA SENSORS 0.5 1.640 SAFETY LIGHT CURTAINS / SAFETY COMPONENTS Emitter & receiver angular deviation PRESSURE / FLOW SENSORS INDUCTIVE PROXIMITY SENSORS 0 0 20 10 20 10 (Down) Left Center Right (Up) Operating angle θ ( ° ) θ L θ L PARTICULAR USE SENSORS Emitter Emitter SENSOR OPTIONS Min. length of detectable object a (mm in) Correlation between setting distance and minimum length of detectable object 150 5.906 WIRE-SAVING SYSTEMS MEASUREMENT SENSORS L (m ft) a (mm in) 100 3.937 STATIC CONTROL DEVICES b 50 1.969 0 SIMPLE WIRE-SAVING UNITS The minimum length of the detectable object, which lies in a plane perpendicular to the sensor front surface, varies with the setting distance, as shown in the left graph. However, note that the minimum length of the detectable object also varies with the object thickness. 200 7.874 Emitter 0.5 1 1.640 3.281 Setting distance L (m ft) LASER MARKERS Receiver b = 30 mm 1.181 in or more Thickness = 0.8 mm 0.031 in PLC * The sensing object is considered to be placed at the center of the sensing area. PRECAUTIONS FOR PROPER USE • Never use this product as a sensing device for personnel protection. • For sensing devices to be used as safety devices for press machines or for personnel protection, use products which meet laws and standards, such as OSHA, ANSI or IEC etc., for personnel protection applicable in each region or country. • If this product is used as a sensing device for personnel protection, death or serious body injury could result. • For a product which meets safety standards, use the safety light curtain. Please refer to p.455~ for safety light curtains. HUMAN MACHINE INTERFACES Refer to p.1552~ for general precautions. FA COMPONENTS Selection of large indicator operation • Lighting/Blinking is selected by the operation mode switch on the emitter and the receiver. • Use M4 screws with washers and M4 nuts. The tightening torque should be 0.5 N·m or less. (Purchase the screws and nuts separately.) M4 screws with washers M4 nuts MACHINE VISION SYSTEMS UV CURING SYSTEMS Operation mode switch Operation of large indicator Emitter Lighting LIGHT BLINK Blinking LIGHT BLINK Receiver LIGHT BLINK LIGHT BLINK Selection Guide Liquid Leak Detection Liquid Level Detection Water Detection Selection of output operation • The output operation mode is selected by the operation mode switch on the receiver. The switches must be set with the power supply off. The operation mode does not change if the switch setting is changed with the power supplied. Mounting ENERGY MANAGEMENT SOLUTIONS Operation mode switch (Receiver) Output operation Operation indicator (Orange) D-ON D/ON L/ON ON in Dark state Lights up when the output is ON L-ON D/ON L/ON OFF in Dark state Lights up when the output is ON Note: LIGHT/BLINK switch is not related to the output operation selection. Color Mark Detection Wafer Detection Ultrasonic Small / Slim Object Detection Obstacle Detection NA1-11 935 FIBER SENSORS LASER SENSORS PHOTOELECTRIC SENSORS MICRO PHOTOELECTRIC SENSORS AREA SENSORS SAFETY LIGHT CURTAINS / SAFETY COMPONENTS PRESSURE / FLOW SENSORS INDUCTIVE PROXIMITY SENSORS PARTICULAR USE SENSORS SENSOR OPTIONS SIMPLE WIRE-SAVING UNITS WIRE-SAVING SYSTEMS Small / Slim Object Detection Area Sensor NA1-11 PRECAUTIONS FOR PROPER USE Wiring Others • Make sure that the power supply is off while wiring. • Verify that the supply voltage variation is within the rating. • If power is supplied from a commercial switching regulator, ensure that the frame ground (F.G.) terminal of the power supply is connected to an actual ground. • Ensure that an isolation transformer is utilized for the DC power supply. If an autotransformer is utilized, the main body or power supply may be damaged. • If the used power supply generates a surge, connect a surge absorber to the power supply to absorb the surge. • In case noise generating equipment (switching regulator, inverter motor, etc.) is used in the vicinity of this product, connect the frame ground (F.G.) terminal of the equipment to an actual ground. • Do not run the wires together with high-voltage lines or power lines or put them in the same raceway. This can cause malfunction due to induction. • Make sure that stress by forcible bend or pulling is not applied directly to the sensor cable joint. LASER MARKERS PLC HUMAN MACHINE INTERFACES ENERGY MANAGEMENT SOLUTIONS FA COMPONENTS Reflective ceiling Receiver Emitter *R  efer to “Parallel deviation” (p.934). DIMENSIONS (Unit: mm in) The CAD data can be downloaded from our website. NA1-11  NA1-11-PN Sensor 2-ø4.6 ø0.181 supplementary mounting holes, 1.1 0.043 deep (on both sides) 2-ø4.5 ø0.177 mounting holes with M4 nut seats, 3.3 0.130 deep (1.1 0.043 deep on back side) 2-ø4.5 ø0.177 mounting holes with M4 nut seats, 3.3 0.130 deep (1.1 0.043 deep on back side) 30 1.181 18 0.709 10 0.394 MACHINE VISION SYSTEMS UV CURING SYSTEMS • Do not use during the initial transient time (0.5 sec.) after the power supply is switched on. • Although this sensor can detect slim objects by using the cross-beam scanning system, the size of the slim object which can be stably detected differs with the setting distance. Hence, when the sensor is used to detect slim objects, make sure to confirm stable detection using the actual objects. • In case of this sensor, light from the emitter spreads above and below the sensor. Hence, take care that if there is a reflective object above or below the sensor it will affect the sensing. Reflective floor MEASUREMENT SENSORS STATIC CONTROL DEVICES Refer to p.1552~ for general precautions. 15 0.591 30 1.181 18 0.709 5 0.197 Large indicator (Orange) 100 3.937 (Sensing height) Selection Guide 2-ø4.6 ø0.181 supplementary mounting holes, 1.1 0.043 deep (on both sides) 5 0.197 Operation mode switch 130 140 5.118 5.512 Operation mode switch 10 0.394 15 0.591 Large indicator (Orange) 140 130 5.512 5.118 100 3.937 (Sensing height) Power indicator (Green) Liquid Leak Detection Liquid Level Detection Water Detection Operation indicator (Orange) Power indicator (Green) Color Mark Detection Wafer Detection 5 0.197 Ultrasonic Small / Slim Object Detection Obstacle Detection NA1-11 Emitter ø3.7 ø0.146 cable, 2 m 6.562 ft long 5 0.197 ø3.7 ø0.146 cable, 2 m 6.562 ft long Receiver Small / Slim Object Detection Area Sensor DIMENSIONS (Unit: mm in) NA1-11 The CAD data can be downloaded from our website. MS-NA1-1 Sensor mounting bracket (Optional) 6 0.236 Mounting drawing with the receiver 2-M4 screws with washers 2-hooks 4-ø4.6 ø0.181 holes t2 t 0.079 22 0.866 6 0.236 Material: Cold rolled carbon steel (SPCC) (Uni-chrome plated) Four bracket set Four M4 (length 15 mm 0.591 in) screws with washers, eight nuts, four hooks and eight M4 (length 18 mm 0.709 in) screws with washers are attached. M4 (length 18 mm 0.709 in) screws with washers are not used for NA1-11. 40 1.575 30 1.181 18 0.709 5 0.197 2-M4 nuts 25 10 0.984 0.394 15 0.591 6 0.236 4.6 0.181 32 1.260 20 0.787 6 0.236 4.6 10 0.181 0.394 ( 100 3.937 Sensing height ) 110 4.331 MS-NA2-1 Sensor mounting bracket (Optional) 75 2.953 6 0.236 4.6 0.181 4.6 30 0.181 1.181 80 3.150 18 0.709 SAFETY LIGHT CURTAINS / SAFETY COMPONENTS PRESSURE / FLOW SENSORS SENSOR OPTIONS SIMPLE WIRE-SAVING UNITS 20 0.787 6 6 0.236 0.236 45 1.772 18 0.709 MEASUREMENT SENSORS STATIC CONTROL DEVICES LASER MARKERS PLC Mounting drawing with the receiver 37 30 1.457 1.181 5 20 0.197 0.787 6 0.236 Assembly dimensions 75 2.953 20 0.787 6 0.236 AREA SENSORS WIRE-SAVING SYSTEMS 4.6 10 0.181 0.394 45 1.772 30 1.181 MICRO PHOTOELECTRIC SENSORS INDUCTIVE PROXIMITY SENSORS 4.6 0.181 t 1.6 t 0.063 LASER SENSORS PARTICULAR USE SENSORS 140 130 5.512 5.118 20 10 0.787 0.394 FIBER SENSORS PHOTOELECTRIC SENSORS Assembly dimensions 20 0.787 10 0.394 18 40 0.709 1.575 936 2-hooks 10 30 0.394 1.181 15 0.591 ( 100 3.937 Sensing height HUMAN MACHINE INTERFACES (18.6) (0.732) 2-M4 nuts ENERGY MANAGEMENT SOLUTIONS FA COMPONENTS MACHINE VISION SYSTEMS UV CURING SYSTEMS ) 2-ø4.6 ø0.181 holes Material: Cold rolled carbon steel (SPCC) (Uni-chrome plated) Four bracket set Four M4 (length 15 mm 0.591 in) screws with washers, eight nuts, four hooks, four spacers and eight M4 (length 18 mm 0.709 in) screws with washers are attached. Selection Guide 30 1.181 2-M4 screws with washers Liquid Leak Detection Liquid Level Detection Water Detection Color Mark Detection Wafer Detection Ultrasonic Small / Slim Object Detection Obstacle Detection NA1-11