Current transmitters are powered by the following batteries:
Micro handheld transmitter 2-channel Art. No. 80000055 - 1 x battery 3V, CR2032
Wall transmitter 2-channel Art. No. 80000001 - 1 x battery 3V, CR2032
Code switching device radio Art. No. 80000002 - 2 x battery 3V, CR2032
Older transmitters were powered by the following batteries:
Micro handheld transmitter RP-S2-MHS-RF23 or RP-MHS-RF63 - 1 x battery 12V27A
Wall transmitter RP-S2-HS-RF11 - 1 x battery 12V23A
Code switching device RP-S2-CSG-AF26 - 2 x battery CR2032 - 3V