Pack size: NC 10pcs (Pack of 5). Specifications below apply per pack. Key benefits Reliable normally closed operation for consistent open and closed state detection. Durable construction using ABS flame retardant housing and a reed switch, resistant to temperature and deformation. Accurate and fast response with a 10 mm actuation distance for dependable triggering. Simple electrical requirements for easy integration into lowvoltage alarm and automation systems. Product details Function: Normally closed (NC). When the switch is close to the magnet the circuit is conductive (light on). When separated from the magnet the circuit is not conductive (light off). Material: ABS flame retardant switch housing with reed switch. Actuation distance: 10 mm transmitting distance with fast reflection and accurate detection. Electrical limits: Designed for use with DC 0V to 24V. Supply current must not exceed 1A. Load current 150 mA. to improve conversion rates. Packaging note: Information above is provided per pack. Why this product solves common problems Prevents false triggers with a stable NC contact and precise actuation distance. Withstands higher temperatures and mechanical stress thanks to flame retardant ABS housing. Works with common lowvoltage control and alarm circuits, minimizing additional components during installation. Typical applications Door and window magnetic contact sensors for alarm and security systems. Access control contacts for cabinets, enclosures, and automatic doors. Home and building automation triggers for lighting or equipment based on door position. Installation tips Confirm the magnet and switch are aligned within the 10 mm actuation distance for reliable operation. Ensure the system voltage stays within DC 0V to 24V and that supply current does not exceed 1A. Keep load current at or below 150 mA to match specified limits. This pack of NC magnetic reed switch housings is intended for use in lowvoltage sensing and control applications that require dependable normally closed contact behavior and heatresistant housing.