... casing 12,Photoelectrlc interface5,Battery and holder 13,M-BUS module6,Temperature sensor 14,Obturating ring7,Waterproof circuit board ... )Battery life ≥10years(1900mA)Communication Photoelectric in terface,M-BUS)Ratio of measuring range 100:1Ambient temper ature -25 ... 6\Failure alarm acousto-optical prompting7\Wire communication(M-bus)8\Wirless telecommunications(433MHZ,GPRS)9\Powerful monitoring and ...