VRF control solutions
Choose a configurable wall thermostat or an AcmeLink gateway for a matched multi-brand VRF project. Gateway selection depends on system topology, indoor-unit wiring and the ordered host integration.
These are not one-size-fits-all products. ACMELEC loads or selects the applicable protocol only after confirming the air-conditioner brand, complete indoor-unit model and communication terminals.
Choose S20 when the project needs a visible wall thermostat and Tuya smart control. Choose B19 for multiple indoor units on a supported shared bus. Choose B27 or B25L for one gateway per indoor unit. For Modbus or BMS integration, request the matching protocol documentation for the ordered version.
Two product routes
VRF Thermostat
Field-configurable thermostat platform with 2-, 3- and 4-wire interface options, Tuya connectivity and multiple wall-panel designs.
VRF Gateway
One gateway for multiple indoor units on a supported VRF system. Connect to the matched indoor or outdoor bus; no additional thermostat required.
Required before quotation
This prevents incorrect firmware or wiring selection.
FAQ
No. The hardware platform is configurable, but the correct brand protocol and wiring must be selected for the actual indoor unit.
The supplied compatibility references cover many major VRF brands, including Daikin, Mitsubishi Electric, Mitsubishi Heavy Industries, Hitachi, Toshiba, Panasonic, Hisense, Haier, Midea, Gree, York and LG. Exact support remains model-specific.
B27 uses a 51 × 53 × 17 mm enclosure. B25L uses an 85 × 85 × 28 mm enclosure. Both allocate one gateway per indoor unit and support WeChat Bluetooth firmware adaptation. Use the matching model’s wiring and controller-coexistence reference.
Compare B19, B27 and B25L installation architectures · Compare the five-model AcmeLink range.