GREENCYCLE 2 Set Wireless Doorbell Door Open Chime, 1312ft Long Range, Adjustable Volume 48 Chimes with LED Flash Door Chime, IP 66 Waterproof Doorbell Button for Home Classroom Office Business

<b>Please kindly email us before you open the return request on Walmart if you have any questions about your order and then we will help you solve the problem within 24 hours</b><br><br><b>GREENCYCLE Wireless Door Open Chime Door Entry Alert Security Contact Sensor and Wireless Doorbell Plugin Receiver</b><br><br><b>Fundction:</b><br><br>Physically simple and elegance.<br><br>Ringtone rhythm lamp and loudspeaker which are aesthetically and acoustically pleasant<br><br>Feel extra comfortable when light up gently at night time<br><br>Batteries life span is more than 6 to 7 years and rarely for batteries replacement<br><br>IP 66 waterproof,low temperature resistance,suitable expose to outdoor rain and snow weather<br><br>Advanced wireless techology,long distance transmission,suitable for grand houses or heavy duty anti-theft doors.<br><br>Extra detailing functions:Power-off memory function,Privacy button,Ultr-low power consumption,Pairable wireless sensors.<br><br>Workable areas: Private houses,Villas,Schools,Companies,Hospitals and etc..<br><br><b>Specifications:</b><br><br>Doorbell volume: 85-97dB<br><br>Working frequency:433.92 MHz<br><br>Wireless range: open space:1312ft (400m) indoor with obstacles:131?262ft (40m-80m)<br><br>Receiver operating voltage:80?275V<br><br>Standby power consumption:100mW<br><br>Transmitter waterproof: IP54<br><br>Battery type: CR2032 (include)<br><br>Battery lifespan: 6?10 years<br><br>Environment operating temperature:Receiver: -20?70? Doorbell button: -40?70?<br><br>Environment operating humidity:Receiver: ?90%RH Doorbell button:?95%RH<br><br><b>Packing list:</b><br><br>Receiver: *2<br><br>Doorbell buttom: *2<br><br>Screw: *2<br><br>Double sided sticker: *2<br><br>User manual: *2<br><br>Retail box: *2"

• Wire free: No wireless in-wall installation , wireless doorbell is battery operated (Maxcell CR2032)for fast and easy use . Lifetime lasts 300,000 times .The portable wireless plug-in receiver plugs into any standard outlet.
• Ringtone :Provide 48 different options of ringtons , 4 volumes for adjustment, allow your wireless door and window entry alert system to meet any need.
• Built-in Led Indicator : With the built-in LED indicator, the wireless door alert receiver and sensor offer additional assistance when coupled with the receiver to the hearing impaired. Difficulty hearing is no problem with our wireless doorbell.
• Free style combo : Each receiver can be paired with up to 32 transmitters like magnetic sensor ,PIR motion sensor etc .Each transmitter can be paired with mutil-receivers.
• Easy install: With its simple wireless plug-in and double-sided tape, the wireless door and window chime sets up in seconds. It gives you the opportunity to spend your time elsewhere. All hardware is included, and ready to use.