Function: can only charge, bottom power dispaly, online search, vibration, sound, light rotation, free to switch prompts, maximum support 999 discs. High-end professional processing chip: imported processing chipset, high-performance noise reduction coding and decoding circuit, fast heat dissipation and strong stability Features: 1. Convenient for guests. Guests can rest in the empty space after ordering, without waiting in the bar. 2. Ultra wide signal available range. You can sit anywhere in the store, or you can stroll around and wait for the pager to remind you to pick up the meal. 3. The pager waiter is made of ABS engineering plastic material, military quality, with exquisite workmanship. Durable and durable, long service life, saving shop costs. 4. The appearance of the disc-receiving device is stylish, so that guests are not only enjoying the meal but also enjoying the high-tech dining experience and the satisfaction of being respected. 5. Other restaurants have gradually used this meal pager waiter device. Keep up with the trend. Specifications: Keyboard transmitter: Size: Approx. 155*115*70mm/6.1*4.53*2.76in Working voltage: DC12V Working frequency:433.92MHZ Working current: 200mA ± 30mA Standby current: 60mA±10mA Coding method: learning code Disc receiver: Colour: Red Size: Approx. 80*73*15mm/3.15*2.87*0.59in Working voltage: DC3.7V (rechargeable battery) Charging voltage: DC5V 4A Working frequency: 433.92MHZ Working current: 120±20mA Standby current: