Koostone Wireless Magnetic Door Entry Sensor Alarm Chime, Door Open Alert for Shop, Garage, Window Security for Kids, Elders Safety, Anti-theft, 2 Secure Contact Sensors, 1 Doorbell Plugin Receiver

• 【How it works】 - Koostone Wireless Door Chime comes with 2 door/window sensors and 1 receiver, and each sensor can set a separate sound with the receiver, that means you can know the front door or the back door or the mailbox opens without needing to go to see it. The sensors will detect the door/window, and will be triggered to send out a signal when the door/window opening. Receiver will receive the signal and alerts. It can be used as door chimes when door opens for business.
• 【55 Ringtones, 5 Levels Volume Control, 400ft Wireless Range】 - 55 Unique ringtones/chimes with 5 Level Volume for a 0-120dB volume range, you can mute the door alarm or choose a favorite level volume. The receiver cover a distance of 400ft Wireless Range, wireless signal can also go through walls.
• 【Fixing Distance Less Than 0.3 inches & Expandable】 - NOTE: The fixing distance of sensor and magnet should be LESS than 0.3 inches/0.8 cm, the closer the better, try to reset them closer if the receiver doesn't work, this is very important. Each door sensor or receiver can be expandable, add more receiver or sensor to setup different chimes in multiple areas for front door, back door, sliding door etc.
• 【Easy Installation】 - Step 1: Choose a favorite ringtone and pairs the sensor and receiver. Step 2: Adhere the magnetic sensor well on your door/window and plug the reveiver into a socket. All ready… PS: the same way to set second sensor ringtone, and you can choose a different chime.
• 【QUALITY GUARANTEE】 - Koostone wireless door chimes provides a 2-YEAR WARRANTY and AFTER-SALES SERVICE within 24 hours. Complete satisfaction guaranteed!

Never miss a customer when door opens for business entry Koostone door sensor always monitors door opening, you will be reminded if someone open the door. The door chime would be the most conscientious and committed worker in your shop. 5 Levels Volume Control and 400ft Wireless Range 5 levels volume on each ringtone, which allows you lower voice to silence or turn the volume up to 120dB. You can place the Receiver almost anywhere in your home/shop because it has a 400ft wireless range. Product Specification Parameters of Receiver: Voltage of plug- in receiver: 110V-240V Expandable to multiple smart receiver or sensor: <50pcs Volume Range: 0~120dB Working Temperature：-15 ℃ ~ +60 ℃ Wireless Range: 400 feet Parameters of Door Sensor: Wireless transmitting distance: ≤ 120 m (in open area) Working temperature: -15 ℃ ~ 60 ℃ Package: 2* Door sensor(battery included) 1* Receiver 1 * User Manual