Feature:1. After ordering, guests can go to the vacant seat to rest, no need to wait in line at the bar2. The launch distance of the food picker is very far, guests can sit at any location in the store, or they can go to the neighborhood and wait for the food picker to remind them to receive the meal3. The food picker is made of ABS engineering plastic material, durable and durable, long service life, saving store costs4. Widely used, suitable for restaurants, cafes, milk tea shops, etc.5. 999 channel keyboard call button and 18 battery charging slots6. Portable rechargeable vibration and buzzer receiver with independent storage memory to avoid data loss7. The receiver has high sensitivity and self-test when power onSpecification:Item Type: PagerReceiver Specifications: Frequency: 433.92MHzDecoder: Learning code (AM)Standby Current: 105mAWorking Current: 7510mAPower Supply: Built-in 180mAh rechargeable lithium batteryCharging Voltage: DC 5VWorking Voltage: DC3.7V (rechargeable battery)Keyboard Call Button Specifications: Frequency: 433.92MHzStandby Current: 245mATransmission Current: 10030mAWorking Voltage: DC 5V/3A power adapterAdapter: AC 100-240V 50/60HzEncoder: Learing code (AM).Package List:1 x Keyboard Launcher18 x Pager1 x Power Adapter1 x English User Manual1 x Antenna