DEIF India Pvt. Ltd supplies Protective Voltage Relays with LED Indicator. DEIF India Pvt. Ltd is an ISO 9001:2008 awarded company. DEIF India Pvt. Ltd offers different types of Engine & genset controls, renewable energy controls, marine bridge instrumentation, switchboard etc. Protective Voltage Relays with LED Indicator is applied for protection of generators, motors and transformers against adverse system voltage conditions. They are applicable to both marine- and land-based installations.