1pcs Wireless Smart Call Button Paging System Receiver 10pcs Calling Pager Features: Receiver: 1. Built-in large capacity battery, it can be recharged and used, it is more convenient and fast 2. It has time display function: LCD display screen, support English humanized menu operation, easy to operate 3. It has vibration, ringtones, multiple prompts method which combine with perpetual calendar display, call watch dual function 4. Widely used in banks, restaurant, hotels, factories, hospitals, offices, leisure clubs, etc. 5. Using 3.7V polymer lithium battery, the theoretical standby time is about 15 days 6. With sleep function, when the customer does not need to receive the call, you can choose to enter the sleep state. In the sleep state, the clock and alarm functions still work, which can reduce the power consumption of the product.   Pager: 1. You can place on the table or on the wall, press when the customer needs service, the indicator lights up and sends a signal to the receiver 2. It is stylish and beautiful, silicone button design is flexible. 3. Waterproof structure, it is lightweight, waterproof and comfortable e. 4. You can move the position at will, it is easy e 5. Use  aeronautical communication special parts to guarantee the stability of signal transmission 6. It has anti-temperature and humidity change function, it is safe and stable   Specification: Condition: Receiver: Model: CTW07 Host Capacity: 500 call extensions Support Chinese and English display Prompt Mode: vibration, buzzer, flashing Receive Sensitivity: 114dBm Call Storage Capacity: 20 groups Power Supply: 250mAh lithium battery Ideally 7 days standby Receiving Frequency: 433.92MHz Compatible with 1, 2, 3, 4, 5 series, etc. Transmission Distance: 1500 meters(open area), 100-150 meters(indoor), Actual distance according to location test Size: Approx. 61 * 53 * 20mm / 2.4 * 2.1 * 0.8in     Pager: Model: CTT23(red + white) Size: Approx. 60 * 60 * 20mm / 2.4 * 2.4 * 0.8in Frequency point: 433.92MHZ Material: ABS   Package List: 1 * Receiver 10 * Emitter 1 * User Manual 1 * USB Charging Cable 1 * Hanging Rope   Note: