Features:Receiver (CTW07):With vibration, ringing, sleep function, using 3.7V polymer lithium battery, the theoretical standby time is about 15 days.The pager signal can be received separately.No need for base station service and built-in antenna.Large screen multi-line display, real-time display of call items (need to match multi-key pager).The product standby screen is time and calendar, which can be used to watch real-time time and date.With alarm clock function, can play a reminding role.Charging power supply mode, can be recharged and easy to use.Chinese (English) text operation interface, you can switch the language according to your needs.Multi-line calling information display, viewing is more visualized and more convenient.The registration number can be set to a combination of letters and numbers, the number form is more varied.With sleep function, when the customer does not need to call, it 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 (CTT20):Suitable for hotel, bar, restaurant, tea house and other dining and entertainment places.With a waterproof base that is both waterproof and easy to replace or repair.Place it on the table, press the function button when the guest needs service, the indicator lights up and sends a signal to the receiver.This machine works with all receivers, portable mobile (BP) receivers or watch machines to receive the service number you need at any time, anywhere.Move the position at will, so that customers can use it when they need it.Adopts SAW DEVICE aeronautical communication special parts, ensuring signal transmission stability.Super stable registration method, no messy code phenomenon.Built-in channel anti-aliasing function and built-in timing circuit design.Resistance to temperature and humidity changes, safe, stable, and highly reliable.Unaffected by cloudy, thunderstorms and environmental changes, super strong and stable.Can change the number at any time, with strong reusability.External antenna, super long transmission distance up to 300 meters in the open area.Perfect energy-saving design, the battery can be used for more than half a year.Stylish and beautiful, convenient and practical.Specification:Condition: 100% Brand NewPlug: US Plug 110-240V, EU Plug 110-240V, UK Plug 110-240V (optional)Receiver:Model: CTW07Color: BlackMaterial: PlasticPower Supply: USB ChargingCapacity: 500 Pager TransmitterAlarm Mode: Vibration and RingtonesReceiving Sensitivity: -113 dbmFrequency: 433.92MHzPager:Model: CTT20Color: BlackMaterial: ABS PlasticKey Type: Single KeyPower Supply: 1 * 12V BatteryTransmitting Distance: 300 Meters (Open Area)Frequency: 433.92 MHz / 315 MHzSize: Approx. 60*60*32 mm / 2.4*2.4*1.3 inPackage list:1 * Receiver10 * Pager1 * Data Line1 * User Manual1 * Plug1 * Hanging Rope (Random Color)