The Threshold Quarter
The Home Quarter · Smart Home
You'll know
the moment it opens
A Zigbee door and window sensor that tells your phone the instant something opens — front door, back gate, garage, medicine cabinet.
Two small parts, a magnet and a sensor, and the moment they separate your phone knows. Use it as security on a back door, as reassurance that the children are home, or as a trigger that switches the hall light on as the front door swings.
Where it earns its place
Front door · back door · garage · windows · cabinets
Specification
| Type | Door / window open sensor |
| Protocol | Zigbee 2.4 GHz (Tuya) |
| Alerts | Real-time, via app |
| Installation | Adhesive, wireless |
| Warranty | 2 years |
Fitting tip — keep the gap between magnet and sensor under 15 mm when closed. Any wider and it reports the door open when it isn't.
Everything you need to know
Orders are dispatched within 1–3 business days. UK delivery typically takes 5–12 business days from dispatch and is free on every order. European delivery takes 7–15 business days, with costs shown at checkout.
Yes. We deliver to the United Kingdom and most European countries. Any shipping costs and estimated times are shown clearly at checkout before you pay.
Yes. As soon as your order is dispatched, you'll receive an email with a tracking number so you can follow it in real time.
You have 30 days from delivery to return an item. It should be unused and in its original packaging. If a product is faulty, damaged or incorrect, we cover the return cost and offer a full refund or free replacement.
Yes. Our products are covered by a 2-year warranty against manufacturing defects, in addition to your statutory consumer rights.
We accept major credit and debit cards, plus other secure options shown at checkout. All transactions are encrypted and processed by trusted payment providers — we never store your full card details.
Yes. We select products that meet CE and UKCA standards where applicable, and every order is checked before dispatch.
Our team is available Monday to Friday, 9am–5pm (UK time), and we aim to reply within one business day. Just drop us an email and include your order number if it's about an order.