Photonic Universe PU2024BW is a marine-grade IP67 waterproof 20 A 12/24 V PWM solar charge controller for caravans, motorhomes, campervans, boats and yachts, delivering reliable battery charging and protection in harsh environments.

• PWM charging technology with automatic cut-off to prevent over-charging and deep discharge; improves charge acceptance and can recover some lost battery capacity.
• Stops reverse current at night and supports sealed, gel and flooded batteries; built-in and external temperature sensors optimize charging.
• Advanced communications: can be connected to a remote meter MT50 (LCD) for monitoring and programming; RS485-to-RJ45 cable/adapter is required and typically sold separately.
• Accepts solar input up to 50 V and handles up to 320 W (12 V) / 640 W (24 V) of PV; rated charging and load current: 20 A.
• Comprehensive protection: over-charge, over-discharge, overload, short circuit and overheating with LED indicators, battery type selection, dual timer and multiple load work modes.
• Fully waterproof IP67 construction for safe, marine-grade use in all weather and marine conditions.
• Low self-consumption: <9 mA (12 V), <7 mA (24 V). Operating temperature: -35 C to +55 C (-31 F to +131 F).
• Size: 13.9 x 7.5 x 2.8 cm (5.47 x 2.95 x 1.10 in); weight: 470 g (1.04 lb). Mounting holes for easy installation. Covered by a 1-year warranty.

Suitable for small to medium off-grid systems in RVs and boats; user manual available for PU2024BW model. For best results fit in a ventilated position and use the MT50 remote meter for full monitoring and parameter programming.