This ATEX signalling hooter produces a sound level of approx. 105 dB(A) at 1 m distance. The characteristic hooting sound clearly stands out from any ambient sound of higher frequency.
The hooter is available for all common supply voltages. The dRGH21 version comprises a call current relay and issues the signals in the pulse rate of the incoming telephone call.
THE DIFFERENT AVAILABLE VERSIONS ARE DETAILED IN THE DATA SHEET