Relay or Voltage Regulator P15M-3C is designed for automatic connection and disconnection of the starter-generator.

It generates alarms in the event of fire, braked condition of the tank, neutral condition of the cooling system fan, low oil pressure and low temperature in the engine etc. to interlock the engine starting in case of low pressure and low temperature of oil in the engine.

It is a Master control unit for Fire fighting system.

Measuring Instrument to measure elevation of Gun Barrel.

The ventilation system provides delivery of cleaned air to the Tank fighting and driving compartments and building up overpressure in them.

Air ventilation inside vehicle compartment.

It is designed to maintain the temperature of the engine parts coming in contact with hot gases within the permissible limits.

It is a navigation gyroscopic indicator designed for driving the BMP under conditions of poor visibility of the terrain and absence of reference points as well as for indicating the direction of movement when the BMP is driven under water.

It is used to give power to traverse reduction gear of code-94 in T-90 Tank.