The TP5709S5 with SOT-23-5 is a thermostat switch manufactured by TECH PUBLIC, designed for temperature control applications. It is RoHS compliant and has a wide operating temperature range of -40°C to +125°C. It features an on/off operation, a hysteresis of ±20°C, and a maximum current rating of 0.5A (DC). The center pin of the device is positive, and the two pins on either side of it are the external connection terminals. The device has a low profile for easy installation and mounting.