EWS4 Wireless Outdoor Siren

Simple and flexible installation

The installation of siren has never been easier:

  • Connect EWS4 to Eldes security system
  • Select where to place it
  • Attach the siren on the wall and it’s ready to use!

If you seek for more reliability, power up the EWS4 via wire.

Exceptional performance

You will no longer have to make an effort looking for the best wireless connection strength. EWS4 contains innovative wireless technology which reaches an impressive range of up to 3 km in open areas. Improved battery life time ensures you won’t have to climb the ladder for up to 5 years. The siren is also resistant to rain, temperature changes and dust.

Additional safety for home

In case of danger detection, EWS4 makes an ear-splitting 104-110 dB noise which deters the burglars and warns the whole neighbourhood. The siren contains bell squawk and bright LED lights to inform about status of security system.


Battery Type and NumberLithium CR123 type (non-rechargeable) 6 batteries
Battery Life Time*~60 months (when all 6 batteries are in use)
External power supply8-15V DC, 1A
Wireless operating frequencyISM868
Built-in temperature sensorYes
Operating temperature range-30…+55ºC (-22… +131°F)
Dimensions289.6 mm x 210 mm x 50.15 mm
Acoustic sound level104-110 dB at distance of 1 m
Wireless Communication RangeUp to 3 km in open areas
IP ratingCompatible with IP54
System compatibilityELDES wireless alarm systems (ESIM384, Pitbull Alarm PRO)



How to restore default parameters?

1. Open EWS4 enclosure.
2. Short circuit (connect) DEF pins for approximately 5 seconds, until LED indicator starts blinking.
3. Remove DEF pins.
4. Parameters reset to default.


How to pair device to the system? Please check the video guidance below:


Checking the device before sending it for repair


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