Zigbee Split AC Control for Ceiling Unit | AC221

Main Feature:

The AC221 is a Zigbee split A/C controller. You can fix it in the ceiling or in the corner. It can convert the ZigBee signal of the gateway into IR command through an external infrared transmitter to control the air conditioner. It can also measure the environmental temperature through a temperature remote probe.

Model: AC221

Dimension: 64 (L) x 45(W) x15(H) mm

Line length of temperature probe: 2.5m

Certification: CE, RoHs, ZHA

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Product Detail

MAIN SPEC

Product Tags

Main Features:

• ZigBee HA1.2 compliant

• Works with Split A/Cs

• Convert the ZigBee signal of the gateway into IR command

• Pre-installed IR code for main stream split air conditioners

• Temperature remote probe for temperature measuring

• External infrared transmitter

• One-click quick pairing

• Scan or manually enter the AC brand code

Split AC Control for Ceiling Unit, In new building project

Application Scenario

AC221 is a ZigBee HA1.2 smart controller designed for ceiling-mounted and concealed split air conditioning systems in smart HVAC projects.
Unlike standard plug-in IR controllers, AC221 features an external IR emitter and a 2.5m remote temperature probe, making it ideal for hidden installations inside ceilings, corners, or equipment spaces while still ensuring accurate room temperature sensing and reliable infrared control.
The controller converts ZigBee commands from a gateway into IR signals for split A/C operation and supports integration with smart building and HVAC automation systems.
With its compact design, wide voltage input (100–240 Vac), and low power consumption (<1W), AC221 is widely used in hotel HVAC retrofit projects, commercial buildings, smart apartments, and centralized climate control systems.

FAQ

1. What is the AC221 used for?

It’s a ZigBee-to-IR smart controller for split air conditioners, enabling wireless control via a ZigBee gateway for smart homes and building automation.

2. Is it compatible with all split ACs?

Yes. It supports mainstream split ACs (including ceiling units) with pre-installed IR codes. You can scan or manually enter the AC brand code for pairing.

3. How to install the AC221?

It features a compact in-wall/wall-mount design (64×45×15mm). Fix it near the AC, aim the external IR emitter at the AC’s receiver window, and place the temperature probe as needed.

4. What’s the function of the external temperature probe?

The 2.5m probe measures room, air duct or pipe temperature (range: -30°C~100°C, accuracy: ±1°C) for precise temperature control.

5. What is the wireless range?

ZigBee 2.4GHz, 30m indoors and 100m in open areas.

6. What power supply does it need?

100~240 Vac 50/60 Hz, low power consumption <1W.

7. Is it suitable for European projects?

Yes. It’s ideal for European new builds (residential estates) and retrofits, widely used by hotel and building system integrators.

8. How to pair it quickly?

It supports one-click quick pairing with ZigBee gateways.

Wireless Connectivity
ZigBee	• 2.4GHz IEEE 802.15.4
ZigBee Profile	• ZigBee HA1.2
RF Characteristics	• Operating frequency: 2.4GHz • Range outdoor/indoor: 100m / 30m (Open area) • Internal PCB Antenna • TX Power: 8 DB
Physical Specifications
Operating Voltage	• 100~240 Vac 50/60 Hz
Power consumption	• < 1 W
Temperature	•Remote probe Sensing Range: −30~100°C Sensing Accuracy: ±1°C
Operating environment	• Temperature: -10 ℃ ~+55 ℃ • Humidity: ≤ 90% non-condensing
Dimension	• 64 (L) x 45(W) x15(H) mm • Line length of temperature probe/ external infrared transmitter: 2.5m
Mounting Type	• Wall mounting