Durable ABS door and window magnetic alarm with chime — a surfacemount sensor that sounds a bell when a door or window opens. Designed for easy installation on most door and window frames, this device provides a simple, reliable alert for home, office, , or bedroom use. Key benefits Immediate audible alert: magnetic contact sensor triggers a doorbellstyle chime as soon as a door or window opens, giving fast, clear notification of entry. Simple installation: surfacemount design allows quick mounting on virtually any door or window frame without complex wiring or setup. Practical protection: helps deter unauthorized entry, notifies you of visitors or family members returning, and increases safety for children and vulnerable occupants. Durable construction: ABS housing resists everyday wear and provides longlasting performance in common indoor settings. Versatile use: suitable for bedroom doors, windows, office entries, back doors, and other access points. Key attributes Function: magnetic door and window sensor that activates a doorbell chime when the contact is broken (door or window opened). Compatibility: surfacemount installation fits most door and window frames and can be used wherever a local audible alert is needed. Material: ABS plastic housing for impact resistance and reliable everyday use. Performance: designed to provide a clear audible alert for improved awareness and security in residential and commercial settings. Typical applications Bedroom or nursery: hear when a child opens a bedroom door at night or when someone enters a monitored room. Home entry points: place on front, back, or patio doors and groundfloor windows to receive immediate alerts of entry. Small business or : monitor back doors, stock rooms, or service entrances to reduce unauthorized access and improve staff awareness. This door and window magnetic sensor alarm delivers a straightforward, dependable way to know when doors or windows are opened, with easy surfacemount installation and durable ABS construction for everyday use.