UL listed.Reptile Applications: The Ultra Deluxe Brooder Lamb is for use above screen top reptile terrariums or wire iguana cages only. Not for use inside any animal cages or terrariums. Make sure clamp is securely suspended above terrarium with appropriate hanging items. Zoo Med's Repti Lamp Stand is a good choice for suspending this brooder lamp. Keep high and out of reach of children. Avoid overheating your terrarium. Make sure wattage of bulb or wattage of ceramic heat emitter is correctly rated for your size terrarium.Safety Instructions: Important, read all instructions before using. Instructions for proper use: Do not splice, repair, or modify. Do not use in wet conditions. Use indoors only. Keep children and pets (other than your terrarium reptiles) away from fixture. Fully insert plug.Polarized: This appliance has a polarized plug (one blade is wider than the other). To reduce the risk of electric shock, this plug is intended to fit in a polarized outlet only one way. If the plug does not fit fully in the outlet, reverse the plug. If it still does not fit, contact a qualified electrician. Do not modify the plug in any way.