IST RETRO Doorbell Adapter
Product Description
- Control board integrates 2-wire doorbell button into IST Retro System
- Causes IST room stations to chime upon button being pressed
- Doorbell button wires connect to control board
- 3-wire connector on board wires into door speaker connector on Master Unit
Tech Specs
- Part Number: RETRO-DBB
- Warranty: 2 Years