1PC PTC thermistor temperature Sensor 1K 2K 3K 5K 10K 20K 50K two Wire 5*45mm 304 probe - AliExpress
PTC Probe — Smiths NZ
Practical tips for installation and using of thermistor motor protection | EEP
PTC Thermistor, Thermistor Probe Epoxy Resin High Sensitivity Practical Fast Temperature Conduction for Motor (80℃) : Amazon.in: Industrial & Scientific
Basic Characteristics of PTC Thermistors | MAXIMUM TECHNOLOGY is the World Leader in PTC-Applying Products.