KOMODO Ceramic Heat Emitter Black 50W is well known for providing reptile habitats with excellent levels of heat whilst also emitting no light. These Ceramic heaters are a fantastic long lasting product to have unlike a conventional basking bulb. It is recommended that heat guards should be used when positioned inside a habitat. Suitable for 24 hour use, they are ideal for constant radiant heat to simulate desert or tropical environments and help to increase the ambient air temperature to warm the skin, scales & bodies of reptiles. This product must always be used in conjunction with a thermostat. KOMODO Ceramic Heat Emitter Black 100W is well known for providing reptile habitats with excellent levels of heat whilst also emitting no light. These Ceramic heaters are a fantastic long lasting product to have unlike a conventional basking bulb. It is recommended that heat guards should be used when positioned inside a habitat. Suitable for 24 hour use, they are ideal for constant radiant heat to simulate desert or tropical environments and help to increase the ambient air temperature to warm the skin, scales & bodies of reptiles. This product must always be used in conjunction with a thermostat.