Features:

• New super compact design, 2.5 x 1 x 0.4 (HxWxD inches)
• Tamper supervised
• Replaceable lithium PL2032 coin cell battery (supplied)
• 5-year battery life, typical
• Magnet and Internal reed switch
• External lead (24 in. mini connector pigtail) for wiring external devices (jumper-selectable)
• Magnet mounts with either supplied double-face tape or screws (screwtabs snap off mounting plate)

The M1XRFTWM two-way wireless transceivers allow an ELK-M1 or ELK-M1EZ8 control to accept Elk's complete line of two-way wireless sensors. The ELK-M1XRFTWM has been optimized to provide superior signal reception and reliability in multi-transceiver applications.
The ELK-M1XRFTW has been replaced by the ELK-M1XRFTWM. The ELK-M1XRFTWM performs all the functions of the ELK-M1XRFTW and is suitable for single or multiple transceiver installations.
DO NOT mix ELK-M1XRFTW and ELK-M1XRFTWM transceivers in a single M1 installation.
Includes:

• Two Way Wireless Transceiver
• Plastic Housing
• (4) #6 Plastic Anchors
• (4) # 6 Pan Head Sheet Metal Screws
• Instructions

• Uses LTE cellular network for high-speed, reliable and low-cost communications to an IP receiver Automatically switches to 3G (HSPA/ HSPA+) if LTE service is not available
• Compatible with control panels that communicate using the Contact ID and SIA (300 baud) formats
• Full event reporting
• 2 on-board inputs
• 2 on-board outputs (open collector)
• Activation and initialization via website or mobile interface provided by C24 Communications
• View communicator status directly from your mobile phone to support on-site or remote troubleshooting
• PTM (Panel Transmission Monitor) switches from PSTN to cellular on unsuccessful communication attempts
• SMS command & control for panel arm/disarm
• PTM call routing to direct cellular signals to multiple receivers based on dialed number
• Advanced carrier selection to secure a suitable cellular connection
• Two unique trouble display models
• Compatible with Sur-Gard System I-IP/II/III/IV/5 monitoring station receivers
• Mobile Site for Easy Installation and Comprehensive Maintenance
• Advanced Panel Transmission Monitoring
• SMS Command & Control
• Input Voltage 13.8 Vdc
• Current Draw (without battery) 40 mA (standby) 180 mA (transmitting)
• The LE4000 has been listed by UL/ULC for Residential Fire and Burglary and UL/ULC Commercial Burglary installations.
• Dimensions 8.5" H x 4.9" W x 1.3" D (216mm x 124mm x 33mm)