Design constraints

• The need of just one sensor per double window
• No false positives when window is unintentionally closed by fast air movement
• slim design, non-disturbing during daily use

Parts list

Per double window and sensor you need

• 1x Xiaomi Door Window Sensor (MCCGQ11LM)
• 4x Window sensors 01 base plate
• 1x Window sensors 02 sensor plate
• 1x Window sensors 03 manget plate
• 2x one-stranded wire with outer diameter of 2,5mm (I my case 2x 12cm copper NYM 1,5mm²)
• 2x double-sided sticky tape by the size of 15x33mm (I took the small tesa Powerstrips, enabling me to remove the mounting plates when needed)
• 1x superglue
• 1x pair of diagonal cutting pliers

Assembly

• clean up prints
• put wire into the groove of the base plate, with ~0,5cm clearance to the lower end
• bend the wire to the desired side
• superglue 2x base plates + 1x wire together
• bend wire according to your needs
• attach sensor or magnet mount - in case the whole is a little loose, bend the wire a little; no glue needed
• check positioning on window handle and correct if needed
• cut wire to length
• attach sensor or magnet to mounting plate with the in-box double-sided adhesive pads
• attach whole mount to window handle
• automate and enjoy!