ET-136A: Fail-secure type (Power to unlock)
ET-136B: Fail-safe type (Power to lock) 

Features and Specifications:

Lock Size: 124Lx32Wx36H(mm)
Holding Strength : 800kg
Bolt structure: Stainless Steel
Voltage: 12VDC
Current: 170mA(ET-136A) / 220mA(ET-136B)
Surface Temperature: Within +20℃
Suitable Temperature: -10～+25℃(14-131F)
Face plate Housing: Painted Steel
Function: Built-out MOV
Suitable For: Wooden Door,Metal Door,PVC Door
Opening Mode: 90 Degree Swinging Door
Weight: 0.42kg