Check the listing for details. 4PACK Digital 110V PID REX-C100 Temperature Controller + max.40A SSR W1L3 NEW. Condition: New. Listed at 83.99 USD. Description Measuring accuracy: +/-0.5%FSCold-end compensation tolerance: +/-2 Celsius（can be modified by software in 0~50 Celsius）Resolution: 14 bitSampling cycle: 0.5 SecPower : AC 110-240V 50/60HZProcess value (PV), Setting value (SV)PIN control (including ON/OFF, step-type PID and continuous PID)Self-tuning controlRelay output: contact capacity 250V AC 3A (resistive load)Proportional band (P): 0~full range (ON/OFF control when set to 0)Detective temperature range: 0 to 400 CelsiusInsulation resistance: more than the 50M ohm(500V DC)Insulation resistance : 1500V AC/minInsulation resistance : Power Consumption Less than 10 VAService environment: 0~50 Celsiusenvironment with no corrosive gas 30~85% RH Aluminum Alloy Heat Sink Specification: Materail: Aluminium alloy.Size:Roof:50mmX60mm.Foot:80mmX50mm.Height:43mm.Compatible with:Designed specially for single phase solid state relay.Color :SilverMax.40A SSROutput Current:40AInput Voltage:DC 3-32VOutput Voltage:24-380V AC Output Voltage Range:Standard Type Package Included: 4 x PID Temperature Controller 4 x K Type Probe Sensor 4 x Max.40A SSR 4 X Heat Sink Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.