- Infrared-Light barrier with Doorbell and Alarmfunction for operation with the Olympia Security system Protect 6xxx/9xxx Series - Working principle: Activation by interruption of Infrared-light ray between Sender and Receiver - Application: Indoor use as doorbell for entry control and as Alarmsensor - Sirene volume 100dB - Infrared-Sensortechnologie - Detect distance selectable up to 4m or up to 20m - Integrated 868MHz module for operastion with Olympia security system Protect - 6xxx/9xxx series - Doorbell-/Alarmsiren function selectable - Volume selectable - Wall mountable (recommended operation hight of the light-barrier approx. 1 – 1.5m) - Power operation - Power failure backup (Batteries not included in the scope of delivery) - Dimensions (each unit): 122 x 80 x 40 mm - Weight (total of sender and receiver): 230 g - Operation temperatur – 10° bis + 40° C