The main drive is made up of the spur gear pair and worm gear pair and the motor can be dismantled independently.

The Hand/Auto switch is adopted in all products, and the shift from manual to motor operation is semiautomatic of electric priority. The handwheel operation of E9202 base and above require minimal effort for the design of high-speed class switching. The self-locking effect is maintained even during manual operation.

16-bit absolute encoder for limit switch makes the valve position data be saved in the event of manual operation during loss of the power supply.

The local selector and the “Remote /Stop/ Local” selector are coaxial mounted, so one hand can finish all operations.

The dot-matrix LCD screen supports multi-language display.

The magnetic latching relays that can feedback the valve position or fault signals in case of power-failure are used for outputting on-off signals.

Infra-red setting tool: For parameter setting and remote controlling.

Local operation：Provided a local/stop/remote selector, and an open/close selector.

Remote open/close operation: The remote open/close control mode of 2-wire, 3-wire or 4-wire could be achieved by different wiring.

ESD signal: ESD signal could be accessed and its process mode could be set for full open, full close or keep.

Interlocking operation: E920 series supply terminals for interlocking open and close. The working mode of interlocking operation can be set.

Proportional modulating: E920 series can proportionally modulate valves by receiving 4~20mA and other analog signals.

Analog outputting: Valve position signals and torque signals 4~20mA can be output.

On-off outputting: Configure 4 magnetic latching relays (can optional add 4 pieces) as standard for outputting and the output signals are configurable.

Field bus: support the Modbus fieldbus protocols,etc.