Product features:Reliable sound generation through magnetodynamic loudspeakers Installation in the top element of a module tower (1 sound generator per tower possible) Duration of the acoustic signals as long as voltage is applied (use additional relay if necessary) Sound generatorTechnical data:Max. 77 dB (A) Duty cycle ED 100% Protection class IP 54, protection class II -30 °C to +50 °C 48 (D) x 61 mm Weight: 0.18 kg24 V (AC/DC), 0.13 AInstallation instructions:Note: