Fusion 433Mhz Wireless Magnetic Contact Sensor Alarm For Roller Shutter Door

• New and imported
• This Magnetic contact made by aluminium alloy, mainly used for roller shutter/rolling door; also applied to other doors and windows.
• Easy to install, pull out the antenna of the transmitter, when the roller shutter/rolling door is opened from the closed position, LED 1 will turn on red light for 5 seconds; the sensor will be triggered and will send alarming signal to the main unit.
• Brand new
• Package included : 1*433Mhz Wireless Magnetic Contact Sensor Alarm For Roller Shutter Door