Model Number: Sauna Lock tm858sb-b Brand Name: Deluns Key Specifications/Special Features: Key specifications:This type of lock can issue EM or Mifare cards as open door card by the lock directlyIf the lock looses power, the lock can gain the power from outside by standby battery boxApplicable to chests and cabinets in places like enterprises, institutions, schools, public bath houses, sauna bath centers as to make management more convenient and intellectualTechnical and functional index:Power supply: 4.5V DC use of 3 pieces of number 5 (or number 7) AA alkaline batteries, with low voltage warning

Static consumption: 3uA (maximum)

Dynamic consumption: about 250mA

Battery lifespan: 10,000 times under low voltage warning, it can open door 150 times at least

Working temperatures: -20 to 70°C

Humidity: 98% RH (maximum)