The RE / REU transformer speed controllers are 5-stage fan speed controllers with a supply voltage of 230V and without TK thermal contacts. The fan speed is controlled by changing the output voltage using a switch on the front plate of the transformer. The RE / REU auto-transformer speed controllers are equipped with indicators for operation signaling.

The REV / RDV auto-transformer speed controllers are designed for the control of asynchronous squirrel-cage motors. The REV / RDV A controllers are equipped with a power 5-stage switch, controlled by a switch on the housing. The REV / RDV C auto-transformer controllers are speed controllers with 5 stage output switching by contactors, controlled by a remote communication switch DOC or DO signal from the parent digital system. The REV / RDV E controllers are contactor switched, equipped with a voltage converter and a 24V AC/DC source for the analog sensor.

The RTRE / RTRD transformer speed controllers are 5-stage fan speed switches with supply voltage of 230V / 400V, speed control is performed using a switch on the front of the transformer. The RTRDU transformer speed controllers are designed for fans with a supply voltage of 400V, speed control is performed using two switches on the front.

The TRN / TRRD / TRRE auto-transformer five-stage speed controllers are designed for switching fans of the type RP, RQ, RO, RF. The TRN five-stage controllers have a separate control (ORe) and power part, which are interconnected by a cable. The TRRD 5-stage controllers are equipped with switches on the front panel of the controller. It is necessary to use an STD protection relay for the controllers. The TRRE five-stage controllers are designed for single-phase fans. The controllers have a built-in control and power section. The controllers must be equipped with a STE protection relay.

The RMT five-speed speed controllers are made of ABS plastic (RMT 1.5 and RMT 2.5), RMT 5, RMT 8 and RMT 12 are made of metal. The RMT are designed to control 400V fans. the RMT auto-transformer speed controllers are equipped with a power 5-stage switch 90, 150, 200, 280, 400V, which is controlled by a switch on the housing (START / STOP).