Buch1 > Appendix Matériel > Connecting Devices to the 2TSM (R) Module > Connecting a Door Bell Button and a Door Bell
Connecting a Door Bell Button and a Door Bell
*Warning: Power surges, which can occur during electrical storms, can cause life-threatening electric shocks or damage or destroy the PBX.
Do not open an already connected PBX during an electrical storm. Also avoid disconnecting and connecting electrical lines during an electrical storm.
Requirements:
Installation cable (e. g. J-Y(St)Y 2x2x0.6) with the following characteristics:
At least three wires (for two door bell buttons)
Unscreened; however: screened for unfavourable conditions, for example, near a strong transmitter or an electrical power line
A door bell transformer
1.Lay the lines.
2.Connect the But1/Klin1 terminal to the contact of the first door bell button (e. g. labelled 1) and with the first door bell.
3.Connect the But2/Klin2 terminal to the contact of the second door bell button (e. g. labelled 2) and the second door bell.
4.Connect the TGnd terminal to the two door bells and the door bell transformer.
5.Connect the door bell transformer to the joint contact of the door bell buttons (e. g. labelled ).


Further steps:
To finish commissioning, you need to configure the COMmander 2TMS (R) module in the Configuration Manager and set up the corresponding door terminal.