Rolling gate magnetic switchDiecastNC contact ( DC current 20 V/0.5 A/10 W), closed when magnet distance < 20 mm, anti-tamper loop1.8 m cable, 4 coresContact: 45 x 15 x 180 mm, magnet: 104 x 30 x 47 mmVdS (German assn. of property insurers) approval number: G191589