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Small white rectangular sensor, 23 by 13 by 60 mm, magnetic wireless motion detector for door alarm system

Ruth's sister

Ruth's sister Magnetic Wireless Motion Detector Alarm Barrier Sensor for Home Security Door Alarm System

SKU CH-3ZKT-EJN3Z

A wireless magnetic contact sensor that triggers an alarm when a door or window opens, sending an alert to a compatible security panel

  • Wireless motion detection alerts you instantly to unexpected entry
  • Magnetic contact sensor fits doors and windows with 1 cm max gap
  • Operates from -10 °C to 55 °C for year-round reliability
  • Compact 23 x 13 x 60 mm design mounts discreetly with included adhesive
  • Works with Tuya Smart and Alexa ecosystems for smart-home integration

Magnetic Wireless Door Sensor

The Ruth's sister detector is a magnetic wireless motion sensor designed for home security door alarm systems. It sends a signal to the host panel when an intrusion is detected, triggering immediate call or SMS alerts to the owner. The unit mounts on doors or windows using the included double-sided adhesive.

Compatibility With Matching Panel Required

This sensor suits households adding a perimeter sensor to an existing, parameter-matched alarm host. It is not suited for buyers needing a standalone alarm, a universal sensor for any panel, or a device supporting smart home platforms such as Alexa, Zigbee or Tuya.

Installation Spacing Under One Centimetre

Correct operation demands the sensor and magnet align with the scale line at a gap smaller than one centimetre. The white detector measures 23 by 13 by 60 millimetres and operates from minus 10 to 55 degrees Celsius.

How it compares

Measured against everything we stock in Worldwide Power Cords, at today’s prices. Recalculated every night.

Price $6.99
Cheaper than about 93% of the 1,208 comparable items (median $9.99).

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Specifications

No published specifications for this item yet.

Questions about this item

Will the 23x13x60mm sensor fit alongside my existing door-frame hardware?

The sensor measures 23 by 13 by 60 millimetres and needs less than a 1-centimetre gap to the magnet, so it sits flush on most standard frames without interfering with hinges or locks.

How do I know the detector is paired and transmitting to the panel after I mount it?

Trigger the sensor by opening the protected door or window; the host panel will immediately call or send an SMS to the owner, confirming the link is live.

Does the package include the host panel or any mounting screws?

The box contains one white detector alarm with double-sided adhesive already attached; the host panel and any screws are not included and must be purchased separately.

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