Silica® 21 - sensor module PR3-S, - slave, - central control, - dimmable. * mounting: - installation arrangement: single/continuous arrangement, - installation type: slip-in mounting, - installation location: to the luminaire. - for surface-mounted luminairesfor pendant luminaires. * component: - housing. of extruded aluminium section. metallic grey (RAL 9006), - for luminaires with darklight reflector, - length: 55 mm, width: 53 mm, height: 54mm. * testings/approvals/admissions: - protection rating (complete): IP20, - insulation class (complete): insulation class I (protective earthing), - certification: CE. - permissible ambient temperature: 0..+40°C. * signal input 1: - 1 x PIR movement sensor. - connection: PIR sensor (passive-infrared). * signal input 2: - 1 x light sensor. * signal output 1: - feature: DALI, slave function, DALI current max. 6mA. - packaging unit: 1 piece. * type: 59MX2BD000SA.