This is a set of an Asahi Pet Heater 40W and an Asahi Electronic Thermostat. ⚠️ Please note the size. The heater is a large type, 20cm tall. ★ Heater 40W Diameter: Approximately 10cm Height: Approximately 20cm Cord length: Approximately 2m ★ Electronic Thermostat AC 100V 50/60Hz Applicable connected devices: Up to 310W Control temperature range: 15°C to 40°C ±1°C Both the heater and thermostat have been tested and are working properly. They have been cleaned and disinfected with alcohol. Instant purchase is welcome. Looking forward to your order.