Radio remote control 12 buttons Dimensions L x W x H: 56 x 123 mm Dimensions W x H x D: 56 x 123 x 19 mm Battery life: ca. 3 years Weight: 64.5 g AES authentication: Yes Batteries: 3 x LR03/AAA Category: Light and output Colour: Black Display: LED Modular: Remote control Outdoor area: No RS485 Bus: No System: HomeMatic Free field range: 100 m Radio frequency: 868.3 MHz