Marmitek Infrared extenders: PowermidXS. Width: 52 mm, Depth: 29 mm, Height: 54 mm. Battery technology: Alkaline, Battery type: AAA. Cables included: 1x AC/DC 2x Batt. Operating frequency: 433.92 MHz, Dimensions (WxDxH): 52 x 29 x 54 mm, Frequency range: 30- 60 kHz