C-TEC CAST Hi-Output 100dB(A) Wall Sounder (shallow base), LPCB certified to EN54-3 & 17 and Kiwa Telefication certified to EN54-13, 6.5mA typical alarm current (460μA typical quiescent current) @24-40V DC (Sounder on max), Onboard short-circuit loop isolator, IP21C (Type A) rate