Set command, signal indicator and monitoring functions in one, A22 series of economic indicators to achieve human-machine buttons and trouble-free between the exchanges, are widely used in machinery, equipment and systems engineering. Because of their outstanding price-performance advantage, the series renowned domestic market. Technical Note: * standard: IEC/EN6097, VDE0660; · plastic structure, the former ring chrome; * contact module to touch security; * the front element protection class IP65; · part of each installation can be installed up to 6 months module, and simple assembly; * switching capacity: AC-15/230V, 6A; · 10x106 time for the operation; * Impact strength:> 30g; · ambient temperature: -25 - +60 oC; · mounting hole diameter: 22.3mm .