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Sensor Type
Contact Closure
Contact Closure Sensors
Door / Window
Garage Door
Motion / PIR / Occupancy
Contact Closure / Relay
Elk : M1
Radio Frequency (RF)
RF Transmission
2-Way Communication
Battery Operated
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Wall Mounted
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Increase Your Elk Home Security System with this Wireless Sensor for Detecting Intrusion
Elk ELK-6021 Two-Way Wireless Mini Window Sensor
Elk ELK-6021 Two-Way Wireless Mini Window Sensor
Elk ELK-6021 Two-Way Wireless Mini Window Sensor
Item# 72850
Customers rated this product 4 Stars
1 customer rating
Price: Normally $60.99 
Hot Deal $50.07
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  • Compatible with the ELK-M1XRFTW Two-Way Wireless Transceiver
  • One built-in reed switch
  • 902 Mhz - 928 Mhz frequency hopping
  • Maximum operating gap of reed: 3/8"
  • Max. recommended mounting distance from receiver: 100 feet
  • Battery Operated (3V CR2032 lithium battery)

Essential Info

The ELK-6021 is an exceptionally thin Wireless Window Sensor. It is designed primarily for use on non-metal surfaces and is ideal for double hung or casement style wood/vinyl windows. It is nearly invisible when installed properly. The 6010 is compatible with Wireless Transceivers and Controls that accept Elk’s two-way technology; such as, the ELK-M1XRFTW. The 6021 contains a built-in reed switch and reports a unique TXID identifier to the transceiver. The 6021 features Elk’s Industry Leading Two-Way Technology, capable of on-demand status updates and good battery life.

ELK’s industry leading two-way wireless technology for the M1 Control revolutionizes the reliability and functionality of wireless peripherals for homes and businesses. Full, true two-way signal acknowledgement ensures verification of the current state of all sensors through active two-way auto sync. It assures installation confidence through signal quality and status. There are LED indicators that verify communication. The units constantly monitor and adjusts ideal RF power level to deliver clear signal while maximizing battery life. The technology utilizes 900 MHz frequency-hopping spread spectrum to increase signal diversity and agility to make sure that signal gets through.


What's Included

  • 1x - Sensor Set
  • 1x - Owner's Manual
  • Specifications

    ManufacturerElk Products
    Manufacturer Product No.ELK-6021
    Frequency902 Mhz - 928 Mhz frequency hopping
    Auto-Sync TypeC
    Dimensions1.1" W x 2.3" L x .25" D (Magnet: 0.37" W x 2.3" L x 0.25" D
    Max. Operating Gap of Reed3/8" (Do not mount on metal surfaces)
    Operating Temperature14° to 104° F (-10° to 40° C)
    Relative Humidity5-95% Non-Condensing
    Battery3V CR2032 Lithium
    Unique TXID CodeOver 1 million combinations

    Important notes:
    Defective exchanges for identical item within Manufacturer’s warranty period.
    Manufacturer contact information: ELK Products Inc, Tel: (800) 797-9355


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