KETOTEK digital thermostat controller 16 A 220 V with a 2.0–3.9‑in display and DIGITAL readout. Intended for household use, it works as a standing unit or wall-mounted device, powered via charger and supplied with a 1.00 m cable (about 3.28 ft). Not a smart device. Maximum measuring range roughly 100–119 °C (212 to 246 °F).