Immerstar Pool Alarm

£39.00£464.00 (inc. VAT)

The Immerstar Battery Powered Pool Alarm is a clever system that can detect the falling of a body in a swimming pool. The system has a sensor which sits in the water and analyses movement, distinguishing interference waves (cascade, filtration, rain, wind, etc.) from those emitted by a falling body. The system will emit a loud, 100db siren, should a person or animal fall into the pool.

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The Immerstar alarm is adaptable on the edge of in-ground, semi-in-ground, and above-ground pools, up to a maximum size of 12m x 5m. The system requires a range of 7m to detect the fall of a body in the water. The response time is proportional to the distance between the point of detection and the point of immersion. The system automatically switches from swim mode to alert mode so you don’t need to remember to turn it on or off.

Please note that the Immerstar alarm system is not designed for self-supporting pools with soft walls, pools without a border, mirror pools, pools with gradually sloped access, or pools with a high rate of filtration (similar to a counter current system). The use of a solar cover can affect the functioning of the alarm.

Please note that the Immerstar 2.0 alarm system is an effective ‘last line of defence’ to protect your child or pet against water accidents. Children and pets must still be supervised at ALL TIMES. It takes just 2 seconds and 2 inches of water for a child to drown.

Please call us on 0208 941 6618 or email us for more information or technical advice.

  • Battery powered pool alarm system
  • Manufactured in Europe
  • Powered by 4 x LR 20 batteries (supplied)
  • Suitable for in-ground, semi-in-ground or above-ground swimming pools
  • Fastens to pool edge
  • In compliance with the standard NFP 90-307/A 1, the alarm is configured for a rectangular pool 4m x 8m in size & 1.4m deep
  • Can be used in pools up to maximum  12m x 5m in size with a range of 7m
  • For larger pools it is strongly recommended that you install additional safety measures
  • Sensor analyses movement of water & detects a falling body
  • Pressure sensor system
  • Operates with a magnet contact key
  • Will not be set off by the wind
  • LED status indicators
  • 100db integrated siren sounds if a falling body is detected
  • Weighs 2.8kg
  • Automatically switches from swim to alert mode


  • The safety, alarm and fault signals must be audible from the house or place of accommodation. This must be verified during installation
  • For pools of unique shape or in the case of large pools (close to 12m x 5m), only an on-site test can verify the compatibility of the system in the pool
  • Some pool equipment may be incompatible with the proper functioning of the system (e.g. pool coverings, or maintenance systems) – if in doubt, please ask us
  • Ensure that the unit is more than 1m away from the filtration system (return fittings, waste plug, skimmer, vacuum fittings, etc.) or any other feature that may disturb the system
  • The system is suitable only if the pool installation allows complete intervention (including rescuing from the pool) in under 3 minutes from the house or place of accommodation
  • Although the alarm is designed not to be set off by wind, you should be extra vigilant if there is strong wind, gusts of wind or bad weather conditions that could affect the sensitivity of the alarm
  • The installation and use of an alarm system is no substitute for the attention of adults
  • You should check your alarm regularly, at weekly intervals as a minimum