Siemens S55180-A157 24 Vac Floating or 24 0-10V Control Non-Spring Return

Siemens S55180-A157 24 Vac Floating or 24 0-10V Control Non-Spring Return,
The SSE Floating Electronic Valve Actuator requires 24 Vac for power and control.
The SSE/SSF Modulating Electronic Valve Actuators require a 24 Vac or 24 Vdc power supply,
and receive a 0 to 10 Vdc signal to control a valve.
These actuators are designed to work with Zone Control Valves,
with a 1/10-inch (2.5 mm) stroke and a threaded valve bonnet that fits the actuator.

Applications
SSE/SSF Series Electronic Valve Actuator
The SSE/SSF Electronic Valve Actuators are for use with
heating and cooling HVAC applications with Zone Valves.