A variety of functionsProvide users with 5 functions to choose from to meet more application needs AdvantageUser can set voltage upper limit and voltage limit lower Delay functionIncrease the waiting time and separate the delay function. New 0-99.9 seconds retract time and 0-99.9 seconds retract time Save automaticallyAll setting parameters can be saved automatically, the contents of the power failure is not lost Specification DC 0-100V measurement range, +0.1V measurement accuracy Specification: Color: red Material: plastic Working voltage: DC12V/24V (optional) (should not exceed the rated voltage by +/-10%) Operating current: Operating temperature: recommended -20~60 (limit range -30~70) Measurement range: 0-99.9V Load capacity: relay normally open port Maximum load capacity: DC 0-30V/10A, AC 0-250V/10A Relay normally closed port Maximum load capacity: DC 0-28V/10A, AC 0-125V/10A Module interface: Input end 1, DC+: DC power supply positive 2, DC-: DC power anode 3, V+: positive voltage measurement 4, V-: negative voltage measurement Relay load output: 1, NO: relay normally open interface, the relay pulls before opening, after suction with COM shorted 2, COM: common relay interface 3, NC: normally closed relay interface, the relay before the short circuit with the COM, pull after the vacuum Module size: 67*44*20mm/2.6*1.7*0.8in Weight: about 30g/1.1oz Note: The 5 functions of the module need to find customer service, thank you Package list: 1 x Comparator of digital window voltage