KDEC

EW N Radiometrix Hartcran House, 231 Kenton Lane, Harrow, HA3 8RP, England Tel: +44 (0) 20 8909 9595, Fax: +44 (0) 20 8909 2233 Issue 2, 21 November 2008 KDEC CodeCode Code-hopping receiver with up to 5 relay outputs KDEC is designed to provide the user with a complete receiver interface for Radiometrix transmitters such as KTX2 and KFX2. No additional parts needed to implement a complete system suitable for applications requiring high security RF remote control. Figure 1: KDEC board Features • • • • • • • • • • • • • Up to 5 relays to control mains powered devices rated up to 8A, 250VAC/30VDC Volt-free changeover contacts Learn button - remembers up to 16 different transmitters Remembers transmitters when switched off Visual indication of Learn function Visual indication of low supply voltage at the Transmitter Visual indication of activated relays Momentary or Latched outputs Basic antenna included - setup is simple as Plug-and-Play Receiver module on-board Terminal block to connect external power supply SMA RF connection 9 – 16VDC supply Applications • • • • • • RF interface for Security and Alarm systems Status reporting and monitoring secure systems Industrial controls HVAC controls Wireless door entry systems Simple On/Off switching Radiometrix Ltd KDEC page 1 General Description KDEC is optimised for use with the KFX2 (Key-fob transmitter) or KTX2 modules by means of a jumper link on the PCB, according to the preference of the user. When optimised for KFX2 it is not possible to activate more than one output per transmission and up to 5 relay outputs are available, matching the number of button inputs on the KFX2. Alternatively, when optimised for use with the KTX2 module, the KDEC has simple output functionality. New function-codes are fed to the relays as they are received, e.g. reception of a function-code (S0, S2) will activate relays 1 and 3 simultaneously. For both versions, momentary/latched relay action is also selected by means of a jumper link on the board. Visual Indications The following status LEDs will light, depending on the status of KDEC. LED 1-5 LOW-BATT LEARN POWER Function Relay active (Red) TX Low Battery (Red) Learn/Learnt (Orange) POWER (Green) Description Relay energised; S0-S3 Function-code output Transmitter supply voltage