Deif Full-auto Synchronising Relay Deif Full-auto Synchronising Relay 200Ms 400Ms Max. Voltage Difference Acceptance: 10% Max. Frequency Difference Acceptance: 0.4Hz Setpoint For Controller: 0.20Hz Proportional Band For Controller: 1.0Hz Length Of Relay Pulses From Controller: 5 Weight: 2.300 Kg