Grothe Wireless Door/Window Contact 43394 for Funkgong Systems, 433.92 MHz, 150m Range, White

With a 150-metre open-field wireless range and a 433.92 MHz transmission frequency, the Grothe 43394 door/window contact keeps your Grothe Funkgong chime system instantly informed the moment a door, window, or drawer moves. This magnetic reed-switch sensor is engineered for reliable, maintenance-free operation, powered by a single CR2032 button cell that lasts up to two years.

Overview

The Grothe 43394 is a wireless magnetic contact transmitter designed to expand your existing Grothe Funkgong system. It detects the separation of its two parts—mounted on the frame and the moving leaf—and sends a signal to your compatible chime receiver. Whether you need to monitor a front door, a patio window, or a cabinet, this sensor integrates seamlessly with MISTRAL, CALIMA, and other Grothe wireless chime series.

What stands out

• Long-range 433.92 MHz transmission reaches up to 150 m in open field, ensuring reliable alerts even in larger homes or workshops.
• Ultra-low power consumption: one CR2032 lithium battery provides approximately two years of service, with a low-battery indicator on the connected chime.
• Flexible mounting via adhesive pads or screws—no wiring required, and the self-adhesive tape is included for quick installation.
• Robust ABS plastic housing in white blends discreetly with most door and window frames.
• Wide operating temperature range from -10°C to +40°C, suitable for indoor use in hallways, garages, or utility rooms.

Technical details

• Product type: Wireless door/window contact (magnetic reed switch)
• Transmission frequency: 433.92 MHz
• Wireless range: up to 150 m (open field)
• Compatibility: Grothe Funkgong systems (MISTRAL, CALIMA series and others)
• Power supply: 1x CR2032 lithium button cell (3V, included)
• Battery life: approx. 2 years
• Mounting: adhesive pads or screws (self-adhesive tape included)
• Colour: White
• Housing material: ABS plastic
• Operating temperature: -10°C to +40°C
• Low battery indicator: Yes (via connected chime unit)
• System expansion: Yes, for existing Grothe wireless chime systems
• Included batteries: 1x CR2032

Our verdict

The Grothe 43394 is a straightforward, dependable way to add door or window monitoring to your existing Grothe wireless chime. Its long range, long battery life, and tool-free installation make it an excellent choice for both residential and light commercial use.