The Wired Doorbell bracket connectors are labeled as follows:
- A1 and A2 - Connectors for wired doorbell push button - 1 bell wire
- B1 and B2 - Connectors for wired doorbell push button - 2 bell wires
- AC1 and AC2 - Connectors for Transformer wires
Caution: It is recommended to use a qualified electrician to connect and check operation of the transformer.