Item Description:The self-test feature during installation prevents assembly errors or operational errors.Built-in LED real-time display working status voltage supply: 50~60HZ 3.0 V A; AC 115~230V -15%...+10%, AC 24~36V -15%...+10%* Ambient temperature: -30 ~ 60 ° C* Delay time:- Relay delay after power-on: 3S ± 1S- Relay delay is disconnected when the liquid level is insufficient: 5S±2S, LED is lit- Internal error relay delay off: 5S ± 2S, LED flashing- Liquid level normal relay delay pull-in: 5S ± 2S, LED off- Error elimination relay delay pull-in: 5S±2S, LED off* Output relay: max AC 240V, max 2.5A, C300; min≥24V AC/DC, ≥ 20mA.*Lifetime: about 1 million times* Protection level: IP54* Material: PA66, GF25* Installation: screw connection*Connection line: 5-core, AWG-18 (0.75mm2) L cable = 2m*Maximum operating temperature: +120 °C* Housing material: alloy steel nickel plated (suitable for ammonia refrigerant)*Hexagon to side: 24/36* Maximum working pressure: 50bar* Burst pressure: 250bar*Net weight: about 45 gramsWiring reference diagram:Item Specification:Features: Photoelectric switchMaterial: PlasticItem Type: Switches: 1Switch Type: Photoelectric Switch