This control board is used one For B&D controll-a-door 4 ( 27MHZ) with an antenna that lenth is about 2 meters long and another Controll a Door 4 (433.92MHZ) with short anttenna 0.2 meter only. both are not compatible each another. 

Our control board will be tested and marked before dispatching.

Good to know :

Check length of antenna at back of drive unit in garage before purchase. 

• $98.00

Free shipping (within Australia)

Not Available