Flipkart has xcluma Mc-31 Magnetic Door Contact Switch Electronic Co on sale for INR ₹100 Only.
No external power supply, connect to wired or wireless alarm control panel GND and N.C or N.O ports directly!ABS material, Alarm distance: 15mm-30mmEconomic solution for Non-metal door/window protection
Go to product page https://www.flipkart.com/xcluma-mc-31-magnetic-door-contact-switch-electronic-components-hobby-kit/p/itm476f5cf6ec91c?pid=EHKG9YSY7ACWWXYT&affid=roobaicom at Flipkart and buy the product.
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