LED Slim bidirectional wireless keypad for indoor. It incorporates 13.56MHz proximity reader. White color. For Agility™ 3, LightSYS™ 2, ProSYS™ PLUS. Grade 2 certificate. Up to 3 wireless keypads per system. Light saving sensor. Wall tamper. Economical battery mode. Wireless doorbell function. Dimensions: 100 x 45 x 25mm. Power supply: 2 CR123 Lithium Batteries, average battery life: 3 years. Consumption: 10?A at rest, Max Current / 100 mA.