Wireless Door/Window Sensor EWD3

EWD3 is designed to protect doors, windows or even drawers. It senses opening and vibration to inform a user, if the attempt to break-in happens, and measures home temperature.

Simple and Flexible Installation

The installation of EWD3 is extremely easy. Remove the plastic tab from the battery and add the device to the security system with one click using Eldes Utility. Mount EWD3 to the door or window with 2 screws or a duct tape. Additional wired zone allows to connect third-party wired devices, including flood sensors, roller shutters or magnetic door contacts!

EWD3 house icon

Exceptional Performance

Innovative Eldes wireless technology enables users to reach an impressive up to 3 km range in open areas. Thick walls and multiple-store properties are no longer an obstacle. You will not need to change the batteries every few months – EWD3 contains amazing up to 5-year battery life!

A Must-Have Device for Home Security

EWD3 is designed to expand security system’s capabilities and protect entrances 24/7. Integrated shock sensor warns the user about attempt to break a door or a window. Adjustable vibration sensitivity won’t let your noisy neighbours trigger the alarm. EWD3 can be used for home automation, e.g. the system can turn off the heating while windows are opened!


Battery3V Lithium 1500mAh CR123A type; CR17345 (IEC) / 5018LC (ANSI/NEDA)
Number of batteries1
Battery operation timeUp to 5 years* /up to 10 years with shock sensor disabled
Wireless bandISM868 or ISM915**
Wireless communication rangeUp to 3000m (~9843ft) in open areas
Built-in temperature sensorYes
Range of operating temperatures-20…+55 °C (-4… +131°F)
Humidity0-90% RH @ 0… +40°C (0-90% RH @ +32… +104°F) (non-condensing)
EWD3 dimensions117x22x22mm (4.61×0.87×0.87in)
Magnet dimensions47x13x10mm (1.85×0.51×0.39in)
Compatible with alarm systemsELDES wireless
* The operation time may vary under different conditions.** Depends on region.



How to pair wireless devices?

Follow this video guide to pair wireless devices properly:


How to restore default parameters?

  1. Press and hold the RESET button.
  2. Hold the RESET button and watch the LED indicator quickly flash (for approx. 5 seconds.).
  3. Release the RESET button.
  4. Parameters restored to default.


CE certificate of conformity

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