Schlage Remote 2.0 Battery Operated Window Actuator.

Maximum Window Size: 100 x 100 cm (H x W)
Minimum Window Size: 30 x 38 cm (H x W)
Chain Material: Galvanised Sttel, Single Links
Max Chain Length: 130 mm
Pulling / Closing Force: 400 N
Pushing / Opening Force: 150 N
Control Signal: Infrared
Remote Control Range: 6 to 20 m
Unit Power Supply: 4 x AA Batteries or 7.5V Power Adaptor (Optional)
Control Power Supply: Remote Control: 2 x AAA Batteries
Wall Control: 3 x AAA Batteries or 7.5V Power Adaptor (optional)
Motion Cycles per set of Batteries: Open and Close Minimum 500 Times
Sensors: Low Battery Indicator (Window Stays in Closed Position)