This document specifies the safety, design, construction, and performance requirements and testing of electronic pressure and/or flow rate regulators (hereafter referred to as regulators ) for burners and appliances burning one or more gaseous fuels. This document is applicable to regulators with declared maximum inlet pressure up to and including 500 kPa and of nominal connection sizes up to and including DN 250. This document is applicable to regulators which use auxiliary energy, regulators, which function by controlling a gas outlet pressure or a gas flow rate, regulators with a modular structure specified as a unit, regulators intended for gas appliances to be installed indoor or in the open air and exposed to the environment. This document does not cover regulators connected directly to a gas distribution network or to a container that maintains a standard distribution pressure.