Check the listing for details. Digital PID Temperature Controller Thermostat Fahrenheit Relay/SSR AC 100V-240V. Condition: New. Listed at 16.99 USD. Description: Power Supply: AC100-240V 50/60HZ. Temperature setting range: -50 to 999 ℃/°F. Input thermocouple: Customers can select 4 types of thermocouples (K, J, E, N) at the panel. Suitable for heating or cooling control. Display: Two lines with three digits, user selectable between Celsius (℃) and Fahrenheit (°F). Display resolution: 1°C/1°F. Control precision: ± 0.5%FS. Control mode: PID, ON/OFF (On/Off Control when P=0). Output: One group control output. Users can choose between relay contacts with a capacity of 3A @ 250VAC or voltage impulse output of 12VDC for external SSR. Alarm: One alarm with 6 modes: high deviation, low deviation, process value alarm. Power consumption: ≤10VA. Ambient temperature: 0-50°C, 30-85%RH, no corrosive gas. Item size: 48*48*75mm(MT-S), 72*72*75mm(MT-M), 48*96*75mm(MT-H), 96*96*75mm(MT-L) Installation Hole Size: 45*45(MT-S), 68*68mm(MT-M), 45*92mm(MT-H), 92*92mm(MT-L) MT-S Item size: 1.89*1.89*2.95 inch Installation Hole Size: 1.77*1.77 inch MT-M Item size: 2.83*2.83*2.95 inch Installation Hole Size: 2.68*2.68 inch MT-H Item size: 1.89*3.78*2.95 inch Installation Hole Size: 1.77*3.62 inch MT-L Item size: 3.78*3.78*2.95 inch Installation Hole Size: 3.62*3.62 inch Panel functions: PV: Measured value/various parameter symbols. SV: Set value/various parameter set values. Out: Output indicator lamp. AT: PID automatic indicator lamp. AL1: Alarm indicator lamp. ▲: Increase numbers. ▼: Decrease numbers. ◀: Shift KEY. MODE: Used for parameter retrieval and set value registration. Package Contents: 1 x Digital PID Temperature Controller. (SSR not included) 1 x English manual. 2 x Mounting bracket. Note: Light reflection and different displays may cause the color of the item in the picture to appear slightly different from the actual product. Please allow a measurement error of +/- 1-3cm.