This additional sensor for the Chamberlain(r) Garage Door Monitor is used for homes with multiple garage doors. It mounts on the garage door and signals the receiver inside the house. The unit is battery powered (included) and requires the Garage Door Monitor (CLDM1) receiver to operate (sold separately SKU# 6100159).
| | Chamberlain Garage Door Monitor Sensor - Door |  | 13.08 |  |
 | Chamberlain Garage Door Monitor Add-On Sensor CLDM2 |  | 10.93 | |
 | Garage Door Monitor - Extra Sensor - Monitors & Intercoms |  | 10.17 | |
Chamberlain Garage Door Monitor Sensor |  | 12.99 | | |
Chamberlain Garage Door Monitor Sensor |  | 12.99 | | |
 | Chamberlain Extra Sensor for Garage Door Monitor |  | 12.77 | |
 | CHAMBERLAIN UNIV GARAGE DOOR |  | 12.11 | |
 | Chamberlain Garage Door Monitor Sensor - Door |  | 14.33 | |
 | Chamberlain CLDM2 Universal Garage Door Monitor Extra Sensor |  | 11.27 | |
 | Chamberlain Garage Door Monitor Add-On Sensor - CLDM2 |  | 13.99 | |