Weller - MT87A3

The Weller transmitter MT87A3 can be used as a replacement transmitter or as the extension of existing plants. Also compatible with any Alulux / Roma MT87A3 Transmitters. Likewise, we have a solution for Weller controllers and receivers in the product portfolio. A 2 channel transmitter can be replaced by a 4 channel transmitter.

Using our radio module can HQAM868-67 following Dickert products are used as a substitute for Weller (also see accessories):

• roller door control: RTS20Q
• Radio receiver: E27Q and E25Q


  • LED for battery / transmitter control
  • KeeLoq coding

  • The 4 channel hand transmitter can be used as a substitute for a 2 channel transmitter

  • Compatible with Weller 868.5 MHz AM radio receivers and Controllers!
  • Similarly to Alulux / Roma MT87A3 Transmitters.
Weller - MT87A3 Weller - MT87A3


Transmission frequency: 868,50 MHz, amplitude-shift keying 'ASK'
Transmission channels: 4
Coding: KeeLoq
Range: up to 75 m in a free field
Operating voltage: 3 V (1x CR2032 lithium button cell)
Power consumption: typically 12 mA in transmit mode
Operating temperature: -20° C up to +60° C at 30% to 80% relative humidity
Dimensions: 70 mm x 30 mm x 13 mm
Weight: approx. 30 g including battery



As a replacement for Weller control and receiver you can use our following products:
- Roller door control RTS20Q
- Radio receiver E27Q or E25Q
-> In addition, the wireless module HQAM868-67 is required!

3V Battery

Spare Battery

RTS20Q - Rolling Shutter Gate Controller

For 230V AC motors with limit switch, SE evaluation, pre-limit switch input, standby <0.5W
- certified by the TÜV -

E27Q - Mini Radio Receiver (2-Channel)

2-channel AM radio receiver

E25Q - Standard Radio Receiver (1 / 4 Channel)

1 or 4 channels in housing, 230V AC, with staircase lighting timer function, QuickLearn, standby < 0.5W 

868 MHz Radio Modules

HF modules

  • Order no. / EAN (GTIN)

    4-Channel, KeeLoq, LED 'Red'

    In regard to the frequency observed!

Consulting and sales only to the electronics and wholesale!