HTW-51-1000 Series Multifunctional Large LCD Digital Thermostat is similar to HONEYWELL model T6861 but much more competitive.

Features
.Super modern appearance design, suitable for
office, hotel and residential building

. Slim design, direct installation on 86 size box
.
.
2-pipe/4-pipe integrated into one unit with easy
configuration
.Big LCD display with English and icons
. Easy to install and set-up
.Time on/off function

Selectable room temperature or setpoint display
.Manual or automatic fan speed selection
. Remote temperature sensor
.
Energy saving mode activation by button press or
dry contact (key card)
. Cycle per Hour (CPH) function
.Adjustment of display room temperature
. Temperature unit either oC or oF
. User setting can be kept when power off
. Freezing protection function available
.
Lock or unlock keys or part of keys in Installer Setup
. Heat and cool setpoint limitation for energy saving
Model summary
Application
application of 3-speed fan and valves in fan coil
system.
Including:
2-pipe cool only/heat only/manual changeover and
4-pipe manual or automatic changeover
Ventilation mode
Manual or automatic 3-speed fan control
Water valve control
Fan speed can be selected to automatic or manual
3-speed control mode.
In ventilation mode, fan only support manual speed
control.
Model Horizontal/
Vertical
Backlight/
Color Ring
Time
on/off
2-pipe/
4-pipe
Power
supply
(V)
Energy
Saving Ventilation
Manual/
Automatic
Fan
Remote
Sensor
Horizontal Blue Y 2/4 220 Y Y Y Y
Note: Horizontal models are taken as samples for display, operation and installation pictures shown in below parts.