v_shortname: Standstill and direction of rotation monitor, device offers intrinsically safe circuits for device protection level: Ga , Gb , Gc , Da , Db , Dc , Ma , Mb, device suitable for installation in device protection level: Gc, device offers intrinsically safe circuits for division: Div. 1 , Div. 2, device suitable for installation in division: Div. 2, Safety Integrity Level: SIL 2, Signal type: Binary input, Number of channels: 2, Field side signal: Frequency, Field side device: NAMUR sensor, potential-free contact, Control side type: Relay (changeover), Transmission direction: to the control, Functions: Start-up bridging, direction of rotation monitoring, speed monitoring, limit value relay, line fault monitoring, Supply: 24 V DC, Supply connection: Terminals or Power Rail, Connection type: Screw terminals, Housing width: 20 mm, Ambient temperature: -20 ... 60 °C (-4 ... 140 °F)