ET-131A: Fail-secure type (Power to unlock)
ET-131B: Fail-safe type (Power to lock)

Featyres and Specifications:

Lock Size: 160Lx25Wx31H(mm)
Holding Strength : 800kg
Bolt structure: Stainless Steel
Voltage: 12VDC
Current: 450mA(ET-131A) / 200mA(ET-131B)
Surface Temperature: Within +20℃
Suitable Temperature: -10～+25℃(14-131F)
Face plate Housing: Painted Steel
Bolt Housing: Stainless steel,Draw the Polishing of silk
Function: Built-out MOV 
Suitable For: Wooden Door,Metal Door,PVC Door
Opening Mode: 90 Degree Swinging Door
Weight: 0.3kg
Standard Packing: 60pcs/box