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40W Ultra‑Slim LED Power Supply
- Model:
- WF-LD40U-12V/WF-LD40U-24V
- Input voltage:
- 100‑240VAC 50/60Hz
- Output:
- 40W
- IP Rating:
- IP20
- Certifications:
- Features:
- This 40W ultra‑slim LED power supply is an external independent constant‑voltage driver for indoor 12V/24V constant‑voltage LED lamps. Multiple versions are available. The smart version supports connection to major smart home platforms. Widely used for lighting systems of cabinets, display cabinets and household furniture cabinets.
- Product Features
Ultra‑slim and compact unit with PC fire‑retardant insulating housing, Class 2 isolated design; 100‑240VAC wide‑voltage input, conversion efficiency over 90 %, low standby power consumption; built‑in active PFC, equipped with Dupont terminals and high‑current terminals for easy wiring; Standard, Internal‑control, Cascaded‑link and Smart versions optional. Smart version is compatible with Mi‑Home, Tuya, Tmall Genie, Huawei, Xiaodu, Amazon, Google and HomeKit; multi‑protections against short‑circuit, overload and over‑temperature, auto‑recovery after fault removal; IP20 protection rating, 3‑year warranty, natural air‑cooling.
- Structure & Process
External independent structure, ultra‑thin PC fire‑retardant housing, natural air‑cooling, suitable for narrow installation space inside cabinets.
- Electrical Performance
Wide AC input, optional 12V / 24V constant‑voltage output, rated power 40W, excellent power‑factor performance and stable output voltage.
- Working Environment
Suitable for indoor use, tolerates normal temperature‑humidity variation, vibration‑resistant, complies with multiple safety and EMC standards.
- Application Scenarios
Matches indoor 12/24V constant‑voltage LED lamps, for cabinet lights, wardrobe lights, display‑cabinet light strips and other household & commercial cabinet lighting.
| Category | Parameter Item | Parameter Value |
| Appearance & Structure | Housing Material | PC fire‑retardant material |
| Installation Type | External independent type | |
| Ingress Protection | IP20 | |
| Warranty | 3 years | |
| Input | Input Voltage | 100‑240VAC 50/60Hz |
| Power Factor | PF≥0.90 at full load | |
| Output | Output Mode | Constant‑voltage output, 12V /24V optional |
| Rated Power | 40W | |
| Wiring Terminal | Dupont terminal + high‑current terminal | |
| Version Type | Standard / Internal‑control / Cascaded‑link / Smart version | |
| Smart‑version Protocol | Mi‑Home, Tuya, Tmall Genie, Huawei, Xiaodu, Amazon, Google, HomeKit | |
| Efficiency | ≥90% | |
| Protection Functions | Protection Items | Short‑circuit, overload, over‑temperature protection; auto‑recovery after fault cleared |
| Environment | Operating Temperature | -20℃~+40℃ |
| Max Housing Temperature | Tc=+85℃ | |
| Storage Temp. & Humidity | -20~+60℃, 10‑95% RH non‑condensing | |
| Safety & EMC | Safety Standards | UL8750, EN61347, GB17625.1, etc. |
Note: Actual values are related to input voltage and load conditions; refer to test report for detailed data.

