The difference Thermocouple sensor,please click on the scale what&;s you need! WZP-291 thread Thermal Resistance 6*50mm 1/4"(DN8), 3/8" (DN10), 1/2" (DN15) M20*1,M16*1,M12*1,M8*1,M8*1 End-face Thermal Resistance WZPM-201 PT100 M8*0/M10*1 cable length 0*0/M10*1 cable length 2*0/M10*1 cable size 6M-10M Compression Spring Thermocouple K/E/J Type 1M/1/2M3M/4M/5MPT100 1M/1/2M3M/4M/5M WRNT-01 1-5m K/E/J Type Compression Spring Shielded Wire Adjustable Reed Thermocouple Sensor for Temperature Controller Specifications: Product Name: Compression Spring ThermocoupleProduct Type: K-type,E-type,J-typeProbe Diameter: 5mmProbe Length (D): 30mmCable Length (L): 1m/2m/3m/4m/5mInstallation Thread: M12Temperature Measurement Range: Long-term 0-400℃/Short-term 0-600℃Package Contents: 1 x Thermocouple Sensor Shopping Tips:1:K form and J sort appears to be same, just the cloth within different, K type with bigger temperature vary than J sort the actual discipline is determined by your temperature exhibit device. If the components is K, the sensor needs to be K, if the system is J, the sensor needs to be J:High accuracy of dimension touch with the object,not being laid low with intermediate medium thermal response timeSensitive aware of temperature modifications performanceGood mechanical strength,Long service life,Easy to put in NOTICEAll applications from our store are registered site: 17track/en, PAYMENTVISA,Mastercard,WESTERN UNION,Maestro,Bank Transfer,QIVI WALLET,WebMoney,Boletol,PayPal WARRANTY SERVICEDelivery Time:Ship out within 3-5working daysAll emails can be answered within 24 hours REFUND or RESENDIf goods no longer received or damaged,please cooperate with us to take pictures once you acquire it, then present us the evidence,we will refund or resend a fresh one to you,thanks FEEDBACKAny questions please be at liberty contact with us earlier than you leaving a feedback,we will attempt the best that will show you how to resolve it Immediately.