Leaders in Environmental Control Systems
Main Menu
Home
Products & Services
Range of Computers
Digital Controllers
Alarms
Greenhouse
Heating/Cooling
Humidity
Inlet Control
Lighting Control
Natural Ventilation
Ventilation
Others
Options
Sensors
Lighting
Control Panels
Fans and Chimneys
Geardrives
Air Inlets
Air Heaters
Alarm Systems
Product Brochures
Project Galleries
Contact Us
Legal Notices
Site Index
Search
News
New! Gt Farm - Livestock Controller
Newsletter - Summer 2010
NEW! CLT5 Dual Inlet Position Control
NEW! CLT4 Air Pressure Inlet Control
Subscribe in a reader
Customer Login
Username
Password
Remember Me
Forgot your password?
Forgot your username?
Create an account
Visitors
We have 4 guests online
Home
>
Products & Services
>
Digital Controllers
>
Options
> HPAL Dual Relay Extension Unit
HPAL Dual Relay Extension Unit
Provides an additional two relay outputs.
This unit can only be used with some thermostats.
See also:
HP22 Two Level Thermostat
.
HP26 Two Zone Floating Proportional Controller
.
HP47 Thermal Chamber Control
.
HP54 Four Stage Step Control
.
HD38 Six Step Ventilation Controller
.
HD40 Greenhouse Controller
.
