Sell SUP NC NO Magnetic Contact Switch Door Sensor Wired Metal Roller Shutter Door Home Alarm System best price

100% brand new and high quality Features: Exquisite workmanship, high efficiency, stable working performance. Premium material ensures maximum strength and durability for long lasting usage. Normally open type: When the magnet and the reed switch are together, they are in the off state (NO). Normally closed type: When the magnet and the reed switch are together, they are in the on state (NC). Used for Non-metal door/window protection External power supply, connect to wired or wireless alarm control panel. Magnetic Switch only, other accessories demo in the picture are not included! Tips: -Please do not use the door magnet to directly power on, or power on the equipment (such as buzzer, small speaker). -The power must not exceed 3W, otherwise the reed switch will be damaged. Specification: Model: MC-31B Material: ABS Power Supply: DC 100V/ 0.3A Color: White Dimension: 55x12x11mm/ 2.17x0.47x0.43in Quantity: 1 Set Note: -No retail package. -Please allow 0-1cm error due to manual measurement. plz make sure you do not mind before you bid. -Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes: 1 Set x Magnetic Switch