... Small size,with external terminal,easy installation.2,Input: Frequency: 0.01H--9999Hz,resolution: 0.01Hz. Various ... reliable performance3,Control output: with demical point & ratio setting function,optional Reset/Pausecontrol.Others can be customized.4,Power ... , Coulometer, Voltage Meter, Ampere Meter, Counter, Tacho Meter, Frequency Meter, flowmeter, Timer, Timer Relay, Solid State Relay, Proximity ...