The LF actuator is a compact, low-torque, spring return damper actuator suitable for controlling air dampers up to .8 m² cross sectional area. The LF24-SR is for 0…10 V modulating with 2…10 V position feedback. The actuator is maintenance free, with mechanical position indication. Supply voltage: 24 Vac +/- 20%. 0…10 V modulating control signal. Torque: 4 Nm, IP 54 Protection class. Angle of rotation: Max. 95°, adjustable 37…100% with additional limit stop ZDB-LF. Connection cable 2 x .75 mm² (AWG 18).