Simple Deluxe 100W 2-Pack Ceramic Heat Emitter Bulb - No Light Reptile Heating Lamp with Free Digital Thermometer - Ideal for Reptile Tanks, Chicken Coops, Brooders & Pet Habitats (Turtles, Lizards, Snakes) - Perfect for Nighttime Heating & Temperature Control

I found that I have to vent the box my chicks are in because it gets a bit too hot. As for longevity, this is my first time trying a bulb like this so I have no idea how long they should last. Hopefully will keep my chicks warm through winter.Saves me a trip to the pet store by buying these in multipacks. Put off good heat, just have to see how long they lastNo light, love thatI was tired of replacing heat lamps every few months for our beardie. So I decided to give these a try. I got the two pack because I was skeptical. However, it's now 1.5 years later and I'm still using the first heater. I leave it on all the time and it works great. So much more cost effective. Thanks for a great product.I ordered what was listed as four units for $19.99 upon receipt I was surprised to find 7 insideThese work great for new born pups.These thermometers are in my brooder box for newly hatched quail babies. It is important that the temperature be between 95-100 degrees the first week. As you can see in the picture, the thermometer probes are right next to each other in the brooder box and both register a different temperature (101.8 & 98.6; 99.9 & 103.3; 102.8 & 99.1). The brooder heat lamp is in a fixed position and yet these temps keep fluctuating. I don't want to "fry" my newborns or have them die by not being warm enough. Time to get a decent and correct registering thermometer. Don't waste your money on these.I bought both the heating lightbulb and 2 lamps. All are phenomenal and very sturdy.The lamp itself has a super strong grip which was my main concern because I didn't want it to fall into my tank. It also rotates and holds it's place easily.The lightbulb is heavy and good quality. I have a 50gallon tank and 1 lamp/bulb heats the whole 1 side of the tank perfectly. I haven't left it on long enough to test it's limits I just use it for temp control for my hermit crabs and turn it off around 75-80.FYI the heating bulb makes the metal lamp shade thingy really hot, which should have been obvious to me but I was just really excited putting it together and burned my fingers a little bit trying to turn it.Purchased this to replace the night heat lamp for our beardie. Hoping this is more energy efficient.The bulbs arrived nicely packaged with foam for protection. They measure about 3" in diameter and about 4" long. Tried both bulbs out since some reported damage upon arrival and both worked great.Measured the temperature and showed in the 400F range on the surface.El producto se ve de muy buena calidad, pero el calor es demasiado pocoPará el habitad de mis erizos que es un poco alto el calor no llega hasta ellos, diría que el calor solo da no mas de 30 cmCabane extérieure. Je suis par contre déçue d’avoir fait 2 tentatives pour en livrer dans un refuge pour animaux à Sté-Béatrix sans succès malgré qu’ils aient déjà reçu des commandes par Amazon dans le passé.La mejor compra para mi gallinero en casa!Las gallinas se congelaban en las noches, hasta habían dejado de poner huevos. Con estos focos pueden descansar en las noches de invierno sin luces de colores que las vuelvan locas, y están calientitas.Volvieron a poner huevos y no subió el costo de la electricidad.Precio - calidad - resultados --> Vale cada peso!Llegaron muy bien. El embalaje es bueno. Llega en una caja los dos focos cerámicos. El precio me llegó de oferta: excelente. Ambos cerámicos son de 100w Esperaré a usarlos para ver su durabilidad. Los tengo de reserva por el momento.