SELECTION NOTES / 06
Smart switch loads, minimum power and dimming
QIANXING smart touch switches do not support dimming. Per circuit, rated load must not exceed 800W and LED load must not exceed 150W. Minimum loads are 3W for energy-saving lamps, 5W for LEDs or 16W for fluorescent lamps.
Identify the lamp type first
800W is the maximum rated load per circuit, not the LED limit. LED loads must be no more than 150W and at least 5W per circuit.
Also check lamp drivers, wiring and combinations against site conditions and equipment documents. A total wattage below one limit is not a complete compatibility check.
Calculate each circuit separately
Requirements apply per circuit for both models. For a dual-circuit switch, list the lamp type and power on each circuit separately; the two allowances cannot be combined on one circuit.
For example, if both circuits power LEDs, check that each is no more than 150W. Do not treat them as one 300W circuit. This example illustrates calculation per circuit.
Check the minimum load too
There are minimums as well as maximums: 3W for energy-saving lamps, 5W for LEDs and 16W for fluorescent lamps per circuit. When selecting low-power lamps, check the requirement for the specific type.
Provide model numbers and specifications to confirm a particular lamp combination. This page offers no workaround using rewiring or extra components to bypass the requirements.
Specify on/off control and dimming separately
Neither QIANXING single- nor dual-circuit smart touch switches support dimming. Connecting to Mi Home does not change this capability.
If brightness or colour-temperature adjustment is needed, define the lamps and control approach first, then confirm a suitable configuration with QIANXING. Do not use the touch switch as a dimmer.
Requirements at a glance
| Condition | Requirement per circuit |
|---|---|
| Maximum rated load | ≤800W |
| Maximum LED load | ≤150W |
| Minimum energy-saving lamp load | 3W |
| Minimum LED load | 5W |
| Minimum fluorescent lamp load | 16W |
| Dimming | Not supported |
Frequently asked questions
Can I connect 800W of LED lighting?
No. The LED limit is 150W per circuit, not 800W.
Can the two circuits be added together to meet the minimum load?
Check lamp type and minimum load for each circuit. Do not add both circuits’ power to meet a single circuit’s requirement.
Source documents
This page is based on QIANXING’s currently sold second-generation product documents and July 2026 installation instructions. Refer to the relevant product page for models and functions, and consult the complete diagrams in the original manual for construction.