Avoid the vulnerability of traditional wireless sensors with ELK's Two-Way Wireless technology.   Learn more...

Mini Window Sensor

ELK-6021 (White)
ELK-6021BR (Brown)

This exceptionally thin wireless window sensor. It is perfect for double hung and casement style wood/vinyl windows and features Elk’s industry leading two-way technology.


• Compatible with ELK-M1XRFTW two-way wireless transceiver
• One built-in reed switch
• Available in white (ELK-6021) and brown (ELK-6021BR)


• 902 Mhz - 928 Mhz frequency hopping
• Maximum operating gap of reed: 3/8”
• Max. recommended mounting distance from receiver: 100 ft.
• 3V CR2032 lithium battery
• Battery Life: 3 years typical
• Size: 1.1”W x 2.3”L x .25”D, Magnet: .37”W x 2.3”L x .25”D

For more information, call ELK at (800) 797-9355.  To locate an ELK authorized distributor near you, click here.