Overview Operation Mode : ON-NONE-OFF Current Rating : 0.5 Amps Operating Voltage : 100 Volts (DC) Contact Type : Normally Closed Connector Type : Wire Leads Brand : uxcell Switch Type : Magnetic Reed Switch (Normally Closed) Terminal : Screw Material : Acrylonitrile Butadiene Styrene Item dimensions L x W x H : 5.51 x 3.94 x 0.39 inches About this item [Specification] - Current: 0.5A ; Voltage: 100V ; Power Rating: 10W; Action Distance: 10~15mm [Dimension] - Cable Length: 26cm/10.24"; Total Size: 27 x 14 x 7.8mm / 1.06" x 0.55" x 0.31" (L*W*H) [Material] - The magnetic switch alarm is with durable ABS housing for better rust resistance [Normally Closed] - N.C. means Normally Closed: When the magnet together, the circuit is conductive( light on ); when the magnet separates, the circuit is not conductive ( light off ) [Applications] - The Wired Door Sensor is designed for use with window and door alarm systems, such as garage, industrial warehouse and shops, etc.