-self-holding type latch solenoid -with permanent magnet -holding force:0~2.5 kgf -life:1,000,000 cycles minimum ... .0Ω±10% 4.4 Force): 12V DC energized, stroke 5mm, pull force over 450gf 4.5 Force): Holding force over 1700 gram 4.6 ... , Security system etc Latching solenoid 12V,BS-1037N-04 holding force 1700 gram