This wireless roller shutter door reed switch offers heavy duty protection to large roller/shutter doors and windows. It features an external antenna for transmission back to your Watchguard 2020 wireless alarm.
* Heavy duty metal magnet and metal reed switch
* Features tamper protection and up to 80m transmission range
* Transmitter features external antenna, durable/flexible cable conduit
* 3VDC power supply (2 x AAA battery)