Honeywell 5800MINI Wireless Door/Window Sensor (White)

The Honeywell Home 5800MINI is a compact wireless door and window contact designed for compatible Honeywell 5800 Series security systems. Operating at 345 MHz, the white, surface-mounted sensor provides single-zone intrusion detection using a magnetic contact with a maximum 1-inch (25.4 mm) operating gap. It features three diagnostic LED indicators, case tamper protection, and supervised wireless communication. Powered by an included 3V lithium battery, the 5800MINI supports adhesive mounting on doors and windows in residential and light-commercial security applications.

Honeywell Home 5800MINI 345 MHz Wireless Mini Door/Window Contact, White

The Honeywell Home 5800MINI Wireless Door/Window Contact provides magnetic opening detection for doors and windows connected to compatible Honeywell 5800 Series intrusion alarm systems. Manufactured by Resideo under the Honeywell Home brand, this white, surface-mounted transmitter combines a single supervised wireless protection zone, compact housing, and magnetic reed switch to monitor the opening and closing of protected entry points. Measuring just 2.2 inches high, 1 inch wide, and 0.25 inches deep, the sensor is designed for installations where conventional door contacts may be visually intrusive. Its low-profile construction is particularly suitable for ornate doors, casement windows, double-hung windows, residential entryways, and light-commercial security applications requiring discreet perimeter protection.

The 5800MINI communicates over the 345 MHz Honeywell 5800 Series wireless protocol and transmits alarm, supervisory, low-battery, and tamper information to compatible receiving equipment. Its magnetic contact supports a maximum 1-inch (25.4 mm) make distance, allowing the transmitter and magnet to detect movement when a protected opening separates beyond the operating range. Three integrated diagnostic LEDs assist with installation and maintenance: the blue LED indicates proper magnet alignment, the green LED confirms wireless transmission, and the red LED signals a low-battery condition. The blue and green indicators remain active for approximately 15 minutes after battery installation or cover removal, supporting field testing without additional diagnostic equipment. Case tamper protection notifies the connected security system when the transmitter housing is opened.

For installation, the Honeywell 5800MINI includes a matching magnet, 3V lithium CR2032 battery, and double-sided adhesive mounting tape. The transmitter is positioned on the stationary door or window frame, while the magnet attaches to the moving portion of the protected opening. The magnet measures approximately 1 inch long by 0.25 inches wide by 0.25 inches deep, allowing installation in narrow spaces. During enrollment, installers register the device's unique serial number with the compatible alarm control panel and configure it as Loop 1, Input Type 3 (Supervised RF), where supported by the panel. The manufacturer's instructions recommend performing a wireless signal-strength test before permanent mounting and avoiding metal surfaces or locations with substantial electrical interference that could reduce transmission reliability.

The Honeywell Home 5800MINI operates in indoor temperatures from 32 F to 122 F (0 C to 50 C) and is designed for environments with up to 95% non-condensing relative humidity, subject to applicable listing conditions. Its replaceable 3V CR2032 lithium coin-cell battery eliminates the need for hardwired power connections, while the tool-free opening case simplifies battery replacement and periodic inspection. The transmitter is documented for compliance with FCC Part 15 and Industry Canada radio requirements, and Resideo identifies applicable UL 634 contact listings in its product information. The white 5800MINI is also available in a brown variation designated 5800MINIBR. Designed for compatible Honeywell VISTA, LYNX, and other security systems equipped with supported 5800 Series receivers, the 5800MINI provides compact perimeter detection with wireless supervision, magnetic alignment indication, and straightforward installation. Final receiver compatibility, mounting conditions, and enrollment requirements should be verified against the connected alarm panel's installation documentation.