"150 W safety heater-stat with protective basket • Plastic guard protects fish such as suckermouth catfish from direct heat. • With protection against dry-running (switches off automatically if water level falls or heater is taken out of water). • Fully submersible and highly robust 2 mm safety glass. • Direct temperature selection in °C, readjustments can be made after checking thermometer. • Length: 27.5 cm "