LiftMaster 835LM Manuals

1 The Perimeter Alert uses a Passive Infra-Red (PIR) Motion Sensor to detect movement of people and vehicles, while allowing small animals to pass through undetected. The Base Station is powered by the AC adapter and the 4 AA batteries supply power in case of a power outage. NOTE: The Base Station is intended for indoor use only. Model 835LM PERIMETER ALERT Base Station Passive Infra-Red (PIR) Motion Sensor Swivel Bushing Rubber Pads Batteries: If the AC adapter is not connected, the AA batteries in the Base Station should last up to one week. If the Base Station batteries are low, the Base Station will beep every 30 minutes. The AA batteries in the PIR Motion Sensor will last up to 2 years depending on use (lithium batteries are recommended for colder environments). If the PIR Motion Sensor batteries are low, the Base Station will beep every 30 minutes until the batteries are replaced. The PIR Motion Sensor will continue to operate with a low battery, however the light will not illuminate. For peak performance, inspect batteries annually and replace as needed. Programming Additional PIR Motion Sensors: The Base Station can learn the code of up to 7 additional PIR Motion Sensors, responding with unique buzzes. To program additional PIR Motion Sensors see Step 4. To order additional PIR Motion Sensors call 1-800-528-9131. Clear Memory: Press and hold the Learn Button on the Base Station until 3 beeps are heard. On/Off: To turn the Base Station on and off, hold down the power button until you hear the on/off tone. Volume: The Base Station is equipped with adjustable volume controls. The lowest volume setting is the mute feature. Carton Inventory Antenna On/Off Button Volume BASE STATION Operation & Features Overview Mounting Plate AC Adapter Sun/Rain Shield