Rolling Code 2 Channel UHF Relay Board Controller
This clever remote control uses the latest state of the art technology. With rolling code, it’s close-to-impossible to electronically “crack”. It includes two channel relay outputs which can be set for either latching or momentary operation, it’s extremely versatile.
With a sensitive prebuilt receiver, it has a range of over 40 metre (line of sight). The kit includes one keyring Tx!

Whether you want to control a garage door or gate, a car and/or home alarm, or perhaps remotely turn lights or anything else on or off, this high-security system is just what you’re looking for!

The kit is supplied with all the components to build one complete 2-channel relay board (as pictured). One ready built 2-button keyring transmitter is also supplied but up to 15 transmitter units can be learnt by one Rx unit. Extra transmitter units can be purchased separately. The circuit includes a reset input to each channel when in Toggle mode. Thus, for example, a garage door motor could be started when the Toggled relay is activated. Then it will automatically cut off when the door has travelled its full movement and it hits a switch which resets / turns off the corresponding relay.

Relay Board PCB: 61 x 85mm. Supply: 12V DC (See Plug Pack below). Current consumption: Standby <8mA, Both relays active <75mA.

The transmitter / receiver modules used in this kit are also available separately

Download datasheet file

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Rolling Code 4 Channel UHF Relay Board Controller
A 'state of the art' UHF remote control almost impossible to 'crack'. Uses a pre-built 'keyfob' style transmitter (as used in many car lock systems) with 4 pushbuttons, one for each relay on the matching receiver board. Each relay can be either latching or momentary in operation. A LED for each relay indicates when it is operated. The receiver board uses a pre-built UHF receiver module to decode the transmitter signal. For Motor drive applications Limit switches can be fitted to sense the end of travel allowing you to press the button and forget about it.

The kit is supplied with all the components to build one complete 4-channel relay board (as pictured). One ready built 4 button keyring transmitter is included with the kit.

Up to 15 transmitter units can be learnt by one receiver unit. Press button 1 on the transmitter while simultaneously pressing the LEARN pushbutton on the receiver board. You only have to do this for less than 1 second. After about 15 seconds the two units will internally connect and recognize each other. Transmitters 'connected' to any receiver unit can be unattached by pressing the LEARN button continuously for 8 seconds.
The circuit includes a reset input to each channel when in Toggle mode. Thus, for example, a garage door motor could be started when the Toggled relay is activated. Then it will automatically cut off when the door has travelled its full movement and it hits a switch which resets / turns off the corresponding relay.

The transmitter/receiver modules use KEELOQ technology from Microchip to generate the 'rolling codes'. For more information about KEELOQ see AN662 and AN665 from Microchip.

The pre-built transmitter and receiver/decoder modules are also available as separate items - A16 (see below). Extra transmitters are also available.

Supply: 12V DC (See Plug Pack below).

Download datasheet file

Rolling Code 10 Channel UHF Relay Board Controller
This kit uses the same Tx/RX pair as 4Channel Controller but it uses all 10 defined keypress combinations out of the 4 buttons to activate relays. If you read the technical documention the following keypress combinations give readable outputs: pins 1, 2, 3, and 4 (of course) and the pins 1&2, 1&3, 1&4, 2&3, 2&4, and 3&4 pressed together. A PIC16F628 does ALL the work

Toggle or momentary mode is determined by keeping the one or two buttons depressed for more than 2 seconds and then that relay will stay in that mode until another >2 sec keypress. Small relays are used to save weight and board area.

Now, to change the channel operating modes you now hold ANY key down while powering up the receiver. When you release the key, the indicator LED will begin to flash letting you know that you have entered channel setup mode. Now just hold any of the 10 key channel combinations for the usual 2 seconds to change between ON/OFF or TOGGLE modes.

The indicator LED will flash at a faster rate for a second or so to let you know that the mode has changed. It will then stay off until you release the key(s). You can modify all 10 channels in this way - no need to turn power back off in between setting channels. No relays will operate in channel setup mode.

Once satisfied that the channel setup is complete, turn the receiver power back off. If NO transmitter keys are pressed on receiver powerup, then the system is in operational mode, and the keys will control the relays as per the user setting.

The kit is supplied with all the components to build one complete 10 channel relay board (as pictured). One ready built 4-button keyring transmitter is also supplied but up to 15 transmitter units can be learnt by one Rx unit. Extra transmitter units can be purchased separately

Receiver PCB: 113 x 85mm. Supply: See 12VDC Plug Pack below