The DC priority SS20M90DC is the most common DC micro grid baseline system manufactured by SSS. The initial system supplied consists of three interior lights that can be used for eight hours a night, one exterior security light, a 90W solar panel, a 105AH solar battery, stainless steel battery box all necessary cable and a solar panel roof or floor-mount bracket. A DC plug box is supplied that accommodates a 12V radio, a 12V DSTV system and the 12V colour LED television. The DC appliances allow longer daily use of the system than is the case with other Solar Home Systems. Although this system is only supplied with a 90W prime crystalline panel it has the potential to have 200W of solar panels connected to it. The standard unit is supplied with a radio. The growth of the system can accommodate a television, Hi-Fi, DSTV, DVD and eventually a fridge or freezer that is supplied by Specialized Solar Systems (SSS) as a 'top up' option.
The system comes standard with an interactive screen on the smart box that indicates battery voltage, load output Amp screen and panel input Amp screen confirming the efficiency of the system at all times.
The SS20M90DC Smart Box also has the ability to be programmed according to ambient temperature to ensure the correct rate of charge is adhered to. The programmable smart box also has a voltage protection setting ensuring that the usable cycle of the battery is well maintained. Thresholds can be set according to area of installation. The design is tamper proof with seals in the battery box and in the load output of the smart box. The fusing systems design functions not only as a current limiter, but also offers the necessary protection against short circuits. The unit is modular and expandable. It can be adapted according to the consumer's needs and has the 'top up' potential to accommodate a fridge or freezer. All units are manufactured according to NRS52 standards.
| Smart DB Box | Plug box for: | 3 X Interior lights & External 54 LED spotlight (LED) |
| Radio input - Cell phone charger input | TV - Radio | - |
| Fused - Interactive LCD screen | DSTV (Satellite TV) - AC point | Assortment of screws, lugs and consumable's |
| Stainless steel battery box | E S27 Fittings and lamp shades | - |
| 90W Prime crystalline solar panel | G alvanised solar module frame (roof & floor mountable) | 4 m 2.5mm Solar panel cable |
| 1 x 105AH Sealed solar battery | - | 1 2V DC Radio |
| 4 X DC switches | 2 0m 0.75mm Cabtyre cable | Warranty and booklet |