Completely submersible, reliable, dependable and accurate. Water-calibrated to ensure precise temperature selection and superior performance, the heaters deliver the ultimate in direct-set control, compact double-sealed durability and certified accuracy to within one degree. Instead of the typical metal element in a breakable glass tube, these heaters utilize a polymer sheet that uniformly heats a shatterproof glass tube. The temperature is controlled and maintained by a highly precise micro-switch controller. Thermostat reads in both °F (68-89°) and °C (20-32°). The custom Double-Suction Mounting Bracket features an adjustable three-position window that ensures easy-to-view temperature setting. Heaters are suitable for both fresh and salt water

Technical data：

MODEL: HT-25
VOLT: 220/110V
FREQ: 50/60Hz
POWER: 25W