Feature: 1. EFFICIENT WORK: Wireless calling system has 1pc 999 channel call keypad transmitter and 30pcs discs receivers, which enhances the work efficiency and avoids the client waiting for a long time. 2. POWERFUL FUNCTION: Restaurant pager wireless calling system has built in lithium battery, supports vibration, sound, light rotation and other prompting methods, the distance is up to 1000 meters. 3. PROFESSIONAL PROCESSING TECHNOLOGY: Restaurant pager system adopts imported processing chipset, high performance noise reduction coding and decoding circuit, strong stability and fast heat dissipation. 4. FLEXIBLE APPLICATION: Wireless restaurant calling system is widely used in fast food restaurants, food courts, pizza parlors and other places with high customer flows to improve customer experience. 5. CONVENIENT CHARGING: Disc receiver adopts lithium battery, support USB charging, capacity 300mAh, convenient and practical. Easy to operate and long time to use. Specification: Item Type: Wireless Calling System Material: ABS Keyboard Transmitter: Operating Frequency: 433.92MHZ Operating Current: 200±30mA Standby Current: 60±10mA Coding Mode: Learning Code Disc Receiver: Operating Voltage: DC3.7V (Rechargeable Battery) Charging Voltage: DC5V Operating Frequency: 433.92MHZ Operating Current: 70±20mA (Buzzer) 100±20mA (Vibration) 120±20mA (Vibration and Buzzer) Standby Current: