Product FeaturesSeven zone selection keysLED indications for zone selectionUp to eight keypads can be connected togetherSpecificationsVoltage range: 24 VDC supplied by LBB 1956/00Current consumption: <15 mABase dimensions: 40 x 100 x 235 mm (1.57 x 3.97 x 9.25 in)Weight: Approx. 1 kgColour: Charcoal with silver SKU: BOS.LBB1957/00 Amperage Rating: 15 A Voltage Rating: 24 V DC Operating Relative Humidity: < 95% Storage Temperature: -40 °C ... 70 °C Operating temperature: -10°C To +45°C Dimensions: 40x100x235mm Brand: BOSCH Supplier Part Number: LBB1957/00