Olympia TF 400 Door/Window Sensor White

The Olympia TF 400 White door/window sensor pack contains four compact magnetic sensors designed to detect opening and closing of doors and windows. Each sensor delivers a loud 90 dB alarm to alert occupants immediately when a contact is broken. The compact white housing measures 40 mm wide, 20 mm deep and 60 mm high, making the units easy to place discreetly on frames. Powered by LR44 batteries, the sensors are intended for indoor use within an operating temperature range of 0 to 49 °C.

Advantages

These sensors offer a high-decibel audible alert for fast detection of unauthorized entry, combined with compact dimensions that allow unobtrusive mounting on most doors and window frames. The use of standard LR44 batteries simplifies replacement and maintenance. The pack of four sensors enables coverage of multiple entry points in a home or small office without additional purchases.

Suitable for

• Monitoring main and secondary doors in apartments or houses
• Securing windows on ground floors and accessible rooms
• Protecting interior doors leading to storage or server rooms
• Short-term or temporary installations in rental properties or offices

Key specifications

• Alarm volume: 90 dB
• Operating temperature range: 0 °C to 49 °C
• Battery type: LR44 (per sensor)
• Dimensions (W × D × H): 40 × 20 × 60 mm
• Color: White
• Quantity in pack: 4 sensors

How to use

Install each sensor by aligning the magnet component and the sensor body on the door or window and corresponding frame so that they are adjacent when the door or window is closed. Secure the units with the provided adhesive or screws if necessary, ensuring the contact faces are within the recommended gap for reliable activation. Fit new LR44 batteries before first use and check the alarm function by opening and closing the protected entry to confirm correct operation.

Recommendations

Place sensors on frequently used entry points and test them periodically. Replace LR44 batteries when alarm volume decreases or as part of scheduled maintenance. Avoid outdoor exposure or installation in locations outside the stated temperature range to ensure reliable performance.