uxcell N.O. Recessed Wired Security Window Door Contact Sensor Alarm Magnetic Reed Switch White RC-33 3pcs

uxcell N.O. Recessed Wired Security Window Door Contact Sensor Alarm Magnetic Reed Switch White RC-33 3pcs

Dairzitv Recessed NC Security Alarm Door Window Contact Sensor Magnetic Reed Switch. 3⁄4 Inch Door Contact Position Switches DCS Work with All Access Control and Burglar Alarm Systems White 5 pcs

Honeywell WAVE-2 Two Tone Siren