Yale B-HSA6010 Alarm Accessory Door/Window Contact, White, 15.2 x 8.8 x 3 cm : Amazon.co.uk: DIY & Tools
Yale B-HSA6010 Alarm Accessory Door/Window Contact, White, 15.2 x 8.8 x 3 cm : Amazon.co.uk: DIY & Tools
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YALE DOOR / WINDOW CONTACT SENSOR SR-DC.
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Yale Mini Door/Window Contact - Sync Alarm Accessory - Discrete and Stylish - 200 m Range - Works with Alexa, Google Assistant and Philips Hue : Amazon.co.uk: DIY & Tools
Yale EF-DC Door/Window Contact Sensor Alarm - White for sale online | eBay