PCT503 ZigBee Smart Thermostat (ZHA)
PCT503
ZigBee HA1.2 smart thermostat for 2H/2C multistage conventional and heat pump systems, with 3.5-inch color TFT display, smart rotary control, AWAY button and OTA firmware updates.
Overview
The PCT503 is a ZigBee smart thermostat with a 3.5-inch TFT color LCD, smart rotary control and full multistage HVAC support.
Key Features
- ZigBee HA1.2, router device
- Supports 2H/2C multistage conventional and heat pump systems
- One-touch AWAY button to save energy
- 4-period and 7-day programming
- Multiple HOLD options
- Automatic heating and cooling changeover
- Fan cycle mode periodically circulates air for comfort
- Compressor short cycle protection delay
- Failure protection by cutting off all circuit relays after power outage
- 3.5" TFT color LCD with backlit status colors (red heat / blue cool / green fan)
- Screen lights up for 20 seconds when motion is detected
- Smart rotary control wheel + 3 side-buttons
- OTA firmware upgrade (optional, via WiFi)
Specifications
| Protocol | ZigBee 2.4GHz IEEE 802.15.4, ZHA1.2 Profile, Router Device |
|---|---|
| Output Power | +3dBm (up to +8dBm) |
| Receive Sensitivity | -100dBm |
| Display | 3.5" TFT color LCD |
| Compatible Systems | 2H/2C multistage conventional and heat pump; gas, electric, hot water, steam, oil heat sources |
| Fan | Fan cycle mode; AUTO-ON-CIRC |
| Programming | 4-period 7-day programming |
| Hold Options | Permanent / Temporary / Back to Schedule |
| OTA | Optional Over-the-Air upgrade via WiFi |
| dimmer | Smart rotary control wheel + 3 side buttons |
| Motion Detection | Screen lights up 20s on motion |
| Sensing | Motion sensor; backlit color status (red=heat, blue=cool, green=fan) |
Key Benefits
Smart Rotary Control
Rotary wheel + 3 side buttons with motion-activated 20s screen light.
2H/2C Multistage
Supports 2-stage heat/2-stage cool conventional and heat pump systems.
One-Touch AWAY
Single button saves energy while you are on the go.
3.5" Color TFT
Backlit status colors โ red heat, blue cool, green fan.
Ideal For
Common deployment scenarios where PCT503 ZigBee Smart Thermostat (ZHA) delivers the most value.
Whole-Home Comfort
2H/2C multistage control for complete HVAC management.
Heat Pump Homes
Full heat pump support with compressor short-cycle protection.
Smart Home Integration
ZigBee HA1.2 with complete docs for third-party hubs.
Energy-Conscious Users
AWAY button, scheduling and fan-cycle modes cut waste.
Premium Renovations
3.5" color TFT and rotary control add a premium feel.
OEM / ODM Projects
OEM branding and ODM development available.
Frequently Asked Questions
What HVAC systems does the PCT503 support?
How is it controlled?
Does it support scheduling?
What does the AWAY button do?
Can firmware be updated?
How does it integrate with smart home systems?
Related Products
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