Door sensor not working? Find out why the zone stays open in Smethwick

What a door contact reports

Most door sensors use a contact and magnet that need to sit within the device's operating range when the door is closed. Door movement, a loose fixing, a warped frame or recent decorating can alter their alignment. Wireless devices may show a weak battery or communication issue; wired devices can be affected by a damaged cable or termination. A panel message can also come from another zone, so identify the exact door or zone before assuming the contact is faulty.

Checking the contact and zone

We ask whether the fault is constant or intermittent, whether the door has been adjusted and what the keypad reports when the door is open and closed. We inspect the contact, magnet, fixing, gap and accessible wiring or battery status, then compare the door's movement with the panel indication. The check includes relevant tamper and power messages. We do not short or bypass the zone to make the alarm set; the cause should be established first.

Repair choices

A shifted magnet or loose contact may be corrected if the door and frame allow reliable alignment. A damaged or unreliable unit may need a compatible replacement, with the choice depending on the panel and whether the system is wired or wireless. If the door itself is distorted or will not close correctly, carpentry or door adjustment may be outside the alarm scope; we explain that boundary and can recommend the appropriate trade. New cable routes or broader system changes are quoted separately.

Before we attend

Close the door normally and note whether the keypad changes state; do not slam it or move the sensor to test it. Check for a visible low-battery message and consult the manual if the sensor has a user-serviceable battery. Do not remove covers, join wires or tape a magnet in place. If access is through a shared building, arrange any required landlord or management permission before the appointment.

Work, scope and approval

We agree the boundaries of a visit with you and explain what is included before work begins. The booking fee is paid when you book. Labour is charged hourly at a rate that depends on how soon you need the visit. We quote the full cost of the proposed work before starting, with parts quoted separately, and wait for your approval. If checks reveal another fault, a need for additional access or a larger project, we explain that scope and provide a separate quote before proceeding. An estimate is not a promise that a repair will be possible in one visit, that parts are in stock or that a particular completion time can be met.

Checks, limitations and next steps

We explain the checks carried out, the result and any uncertainty or limitation that remains. Approved work is tested to the extent practical for the equipment and access available. No repair can guarantee that a component will never fail again, and an alarm is not a guarantee against burglary. We do not provide police response, monitoring-station services, insurance approval or certification. Where a monitoring service is involved, it operates under a separate contract with the provider; confirm its account, signalling and response arrangements with them. If the issue concerns mains wiring or another trade, we explain the boundary and recommend suitable help rather than undertaking work outside the agreed alarm scope. If false activations occur, we investigate likely causes such as batteries, sensors, pets and placement rather than advising repeated silencing or disabling.

Arrange a visit

To book, share the panel make and model if known, the exact display message or affected zone, when the problem began and any recent power, building or household changes. A clear photo of an indicator can help, but do not include alarm codes or passwords in an unsecured message. Mention pets, shared-property permissions, access restrictions and any separate provider involvement where relevant. We attend homes across the West Midlands. Same-day availability may be possible depending on the diary, but it is not promised; we confirm the appointment time and agreed scope with you.