Bosch Motion detector, 60ft (18m)The Bosch Motion detector a key component of the Professional Series brings reliable, commercial grade security to indoor spaces. Engineered for environments such as offices, retail floors, lobbies, and other high traffic interiors, the ISC PDL1 W18G and ISC PDL W18H dual detectors are designed to deliver consistent motion sensing with minimal maintenance. With a generous 60 ft (18 m) detection range, these detectors help protect people and assets