ACMELEC · B2B

S20 or AE-669K: choosing VRF controls for UAE projects

Compare configurable S20 controls and matched Mitsubishi Electric AE-669K thermostats for UAE procurement, retrofit and OEM enquiries.

When to shortlist S20

S20 is a configurable multi-brand VRF wall thermostat platform. The supported brand protocol is selected through Bluetooth configuration, with the matching 2-, 3- or 4-wire communication connection. It is useful when a procurement enquiry includes different supported air-conditioning brands. Supply the exact indoor-unit models: configurable does not mean universal compatibility.

When to shortlist AE-669K

For a matched Mitsubishi Electric installation, AE-669K offers a black LCD wall panel with temperature and fan speed control. The WiFi version uses Smart Life. Available modes and fan options depend on the matched indoor unit and configuration. Ask for the correct wiring and firmware before ordering; a shared brand name is not sufficient.

What to send for a UAE project

Send the indoor-unit model list, controller quantities, existing controller details, required app or local control, and delivery emirate. State whether this is a retrofit or a new installation, and whether you need samples, a logo or packaging changes. If the protocol is unknown, start with model labels and a description of the installation.

Configuration and commercial terms

ACMELEC supplies B2B projects from China. Local stock or on-site installation is not implied. Price, lead time, documents and delivery terms depend on the agreed configuration and quantity. Network arrangements, any retained original controls and sample testing should be confirmed before a bulk order.