Radio remote control 19 buttons Dimensions L x W x H: 63 x 167 mm Dimensions W x H x D: 63 x 167 x 19 mm Battery life: ca. 2 weeks Weight: 172 g AES authentication: Yes Batteries: 3 x HR03/AAA Category: Light and output Colour: Black Display: LCD Modular: Remote control Outdoor area: No RS485 Bus: No System: HomeMatic Free field range: 100 m Radio frequency: 868.3 MHz