Lemona Electronics Zener Diode Hermetically Sealed Glass BZX55C Series 2.4V Taiwan Semiconductor\n\n    Product Description\n\nFeatures\n--BlueSolar 12/24-PWM\"" device. Three models: 5A, 10A or 20A at 12V or 24V *\n--Economical PWM controller (PWM)\n--Internal temperature sensor\n--Three-stage battery charging (main charge, absorption, maintenance)\n--High current protection\n--Short circuit protection\n--Protection against polarity damage when connecting solar panels.\n--Disable low voltage output under load.\n--Optional: remote display (only for 20A model)\n \nBlueSolar DUO 12/24-20 20A at 12V or 24V *\n\n--PWM controller\n--Charges two separate batteries. For example, a starter battery and a service battery for a boat or camper\n--Programmable charging current\n--Adjustable charging voltage for three types of batteries (gel, AGM and liquid electrolyte (acidic))\n--Internal temperature sensor and *optional remote temperature sensor\n--High current protection\n---