Digital Room Thermostat

HL2028 Series

General

This elegant thermostat is a brand new product-Breath. All black surface design decorated by powerful "HaiLin Key" , We believe that the visual

impact and refreshing appearance will switch you to a whole new world. The thermostats are designed to on/off control the fans, valves, dampers

or electric heaters in fan coil units, air-conditioners and heating applications.

MD series provide RS-485 communicating interface and Modbus protocol for system integration. The thermostats can be controlled by local

manually, master controller or operating by the BAS.

Features

● The screen will automatically show normal working interface when any one approaching

● Large screen LCD display

● Concise icon shown on LCD

● One button pressing for energy saving

● Stands by model for energy saving

● Keypad lock to avoid any mistake operations(Optional)

● RS-485 communication interface and MODBUS protocol for system integration.(Optional)

● WiFi for Andriod & iOS(Optional)

Functions

● Detect and Display Room Temp

● Cool/Heat/Vent Mode Change Control

● Manual/Auto Fan Speed

● Clock

● Room temperature setting.

● Cool, Heat and Vent.

● 3 speed fan control, auto / manual

● Timer on/off (-T, Optional)

● 7 days 4 periods Programmable (-T74, Optional)

● Model available for 85-260VAC power input

● Easy installation

Specifications

Supply Voltage: 85-260Vac, 50/60Hz

Setpoint Range: 5～35℃

Setting Unit: 1°F or 0.5℃ /step

Display Accuracy: ± 1°F or 0.5℃

Display: 60 X 64mm LCD display

Operation: Touch screen

Mode Setting: Heating, Cooling and Ventilating

Fan Speed Adjust: High, Medium, Low and Automatic fan speed control

Cycling Fan Control: Fan cycled running with thermostat

Control Performance: ON/OFF control

Differential: 1 ℃/2°F

Thermostat Output: SPST relay for 2-pipe models

                                2 SPST relay for 4-pipe models

Switch current rating: Resistive: 2A, Inductive: 1A

Temperature Sensor: NTC Thermistor 100K

Enclosure: Fire retardant PC ABS

Minimum Operational Life: Thermostat contacts: 100,000 cycles

Remote Controller(optional): Infrared Remote Control

Backlight Function(optional) : 6 seconds, Blue light

Dimensions: 86 X 86 X 13mm (W×H×D)

Hole Pitch: 60 mm

Environmental requirements: Operating temperature range 0 ~ 45℃,

                                               Humidity range 5 ~ 95 %RH (non-condensing)

Mounting: Embeded mounting, standard 86 × 86 mm junction

                                                  box (hole pitch 60 mm)

Wiring:

Screw-in terminals, each terminal capable of accepting

16 AWG, 18 AWG, 1.5 mm or 2.5 mm wires