... .35mm, very small and light. Our pool accessory alarm can protect child from drowning and lossing. ... used at many areas, like private swimming pool, garden ponds, river side, sea water, beach, on boat ... is not a traditional in ground swimming pool accessory alarm. The traditional in ground pool alarm needs ... .6) Alarm, also with vibration.7) Pool accessory alarm decibel is 100dB.8) Three LED indicating ...