Door/Window Sensor Homematic IP 158603A0

The Homematic IP Door/Window Sensor (model 158603A0) is a compact wireless sensor for monitoring the opening and closing of doors and windows. Designed for reliable home monitoring, the device operates at 868 MHz and is powered by two 1.5 V alkaline batteries to provide long service life while maintaining a discreet white appearance (147 mm x 20 mm x 16 mm).

Advantages

The sensor reports window and door status to the Homematic IP system and the Homematic IP app, enabling remote status checks. When paired with Homematic IP radiator thermostats, it can trigger automatic temperature reduction during ventilation. The unit's two batteries support an extended operating period—up to approximately 48 months under normal use—reducing maintenance frequency.

Suitable for

• Monitoring windows and doors in apartments or houses
• Integration with Homematic IP radiator thermostats for energy-saving ventilation control
• Use in rooms where a small, unobtrusive sensor is required

Key specifications

• Model: Homematic IP 158603A0
• Wireless frequency: 868 MHz
• Power supply: two 1.5 V alkaline batteries
• Battery life: up to 48 months (typical use)
• Dimensions: 147 x 20 x 16 mm
• Color: white
• Brand: eQ-3
• EAN: 4047976586035

How to use

Install the sensor on the frame and the magnet on the moving part of the door or window according to the positioning guidelines in the user manual so that the two parts align when closed. Add the device to your Homematic IP system via the app following the pairing instructions. Once connected, the sensor transmits open/closed events to the system and app for status display and automation triggers.

Recommendations

Place the sensor within the recommended distance between sensor and magnet and avoid mounting on metallic surfaces that could affect radio range. Replace batteries when the app indicates low battery to maintain reliable monitoring.