This is XH-W1219 12V Digital Display Temperature Controller Module with NTC Waterproof Temperature Sensor. The XH-W1219 thermostat module with its STM8S µC and I/O (sensor input, keys, double display, relay) can be re-programmed for automation tasks, and it’s easy to work with.
Digital thermostat module. The temperature controller/switch with a waterproof NTC probe and an integrated LED display in red and green.
1 x 12V Digital Display Temperature Controller Module
1 x NTC Waterproof Temperature Sensor