433Mhz 868Mhz MD-210R Window Vibration Detector Door Magnetic Sensor Low Battery Alert Only Compatible With Focus Alarm System - AliExpress
Md-210r 433/868mhz Wireless Magnetic Contact Switch For Door Open/close Alarm | eBay
FOCUS Ασύρματη μαγνητική επαφή MD-210R
Ασύρματη μαγνητική επαφή MD-210R κατάλληλη για όλες τις κεντρικές μονάδες Focus
433Mhz 868Mhz MD 210R Window Detector Door Magnetic Sensor Low Battery Alert Only Compatible With Focus Alarm System From Tonytoppy, $23.22 | DHgate.Com