... One alarm for ON/OFF control 2011--HHE series Digital Timer Counter,Timer Relay(Latest)HH4 series, 48*48*80mm,dual line 4 ... of different models of products, including Temperature Controller, Digital Adjustor,thermocouple (TC and RTD), Panel Meter, Sensor ... , Coulometer, Voltage Meter, Ampere Meter, Counter, Tacho Meter, Frequency Meter, flowmeter,Timer,Timer Relay, Solid State Relay, Proximity Sensor, ...