Product parameters:

  Dimensions: 71*36 * 15.4mm

  Working frequency:... Or433MHZ

  Transmit power: 30 howa

  work current: 10mA

  Launch time:1.5S-3S

  Magnetic Control effective distance: suction-15mm; release-30mm

  Operating voltage: 12v A23 ( special battery for alarm)

  About Products

YTF-M301A wireless door alarm sensor( detector) used to monitor the switch status of the door, when the door is opened for whatever reason, wireless door alarm sensor immediately emits specific radio waves, remote alarm to main machine. Wireless door alarm of wireless alarm signals can be transmitted in the open ground100 rice, it can also be transmitted to ordinary houses.50 about meters, closely related to the surrounding environment.

  Working Principle and about installation

1, this product is generally matched with alarm host( we sell it separately) use, door magnet is composed of two parts: wireless transmitter module and magnetic block. There is a "steel reed" component at two arrows in wireless transmitter module. When the distance between magnet and steel reed is kept1.5 in centimeters, the steel Reed is in the disconnected state. Once the distance between the magnet and the steel Reed exceeds1.5 when cm, the steel Reed will be closed, causing short circuit. When the alarm indicator light is on, it will send an alarm signal to the host.

2, where to install door magnet? Answer: door, drawer, safe Box, window

3, wireless door alarm is generally installed above the inside of the installation object, attention should be paid when installing, IC whether the encoding is correct, minimize the distance from the host, try not to have steel concrete walls and electrical appliances with the host, the installation location must be in a place where rain and humidity are avoided..

4, when the host cannot receive the signal of door magnet, we should take the following measures to troubleshoot:

 (1) check door magnet IC whether the encoding is correct

 (2) check the distance between the door magnet and the host

 (3) check whether the battery has electricity or whether the battery buckle connection is a paragraph

 (4) check the surrounding environment of installing door magnet

 (5) check whether the circuit board of door magnet is damaged

5, when the door magnetic indicator light is not on or will not be off, we should take the following measures to troubleshoot:

 (1) check whether the solder joint of the indicator light on the circuit board is loose and falling off

 (2) check the battery power( when the voltage is lower8 volt-Hour, the led at the bottom of the wireless transmitter will be lit, at this time, the battery should be replaced in time.)

 (3) check whether the circuit board is damaged

C. Install the transmitter on the door frame as much as possible, and install the magnet on the door to reduce the falling off caused by vibration of the transmitter.

    When none of the above measures can solve the failure, please contact our customer service immediately for return and exchange to avoid unnecessary losses!

  Note: This type of product is not suitable for rolling doors and Big Iron Gate (applicable to rolling doors and iron door magnetic doors are sold separately).