Mean Well DRC‑40A UPS Power Supply / Battery Charger Technical Specifications Brand: Mean Well Model: DRC‑40A (13.8 V output) Power Rating: 40 W Input Voltage: 90–264 VAC Output Voltage: 13.8 V ± 1 % Main Output Current: 1.9 A; Charger Output: 1.0 A Protections: Short-circuit, overload (hiccup), over-voltage, battery low cut-off, reverse-polarity (fuse protected)  UPS Function: Provides battery backup on AC failure and automatic recharge Alarm Signals: TTL open-collector for AC‑OK and Battery‑Low (max 50 V/30 mA Certifications: UL, CUL, CB, TUV, CE; meets IEC 60950‑1 Limited Power Source (LPS)  Mounting: DIN-rail TS‑35/7.5 or 15; Dimension: 40 × 90 × 100 mm; Weight: ~0.3 kg  Features: LED power indicator; 100 % full-load burn‑in test