Feature: 1. Time Display: The receiver of the restaurant call button system features a time display, allowing your staff know time while attending to customers. Stay organized and efficient. 2. Efficient Use: The wireless calling system supports up to 400 callers and features a stylish and durable design, can effectively improve the working efficiency. 3. Long Transmission Distance: The restaurant pager system features 200m transmission distance, perfect for larger establishments, ensuring that your staff can be reached easily and quickly. 4. Versatile Application: The wireless caregiver call system is suitable for restaurants, hotels, hospitals, offices, bars, and casinos, providing a convenient solution to improve communication and customer service. 5. Easy Installation: Simply plug in the receiver and pair the buttons for a hassle free installation. No complicated wiring or programming required, time and effort saving. Specification: Item Type: Wireless Calling System Receiver: Working Frequency: 433.92MHz Size: Approx. 210 x 140 x 30mm / 8.3 x 5.5 x 1.2in Material: ABS Receiver Sensitivity: -105dB Decoding: Learning Code Waterproof Rating: IPX4 Operating Temperature: -20℃~ 60℃ Transmitter: Working Frequency: 433.92MHz Material: ABS Battery Type: Alkaline Battery Battery Model: 12V23A Battery Capacity: 60mAh (included) Transmission Current: 10mA±3mA Standby Current: <1uA Open Distance: >200m / 656.2ft Button Lifespan: 1 million clicks Waterproof Rating: IPX4 Operating Temperature: -20℃~ 60℃ Single Key: CALL. Package List: 10 x Desk Bells10 x Adhesive Stickers1 x Power Adapter1 x Receiver1 x User Manual