Morningstar SL-20L-12 Sunlight 20 Lighting Controller 12V
List Price: $115.00
Price:Minimum Advertised Price

** Minimum Advertised Pricing: Manufacturer’s policy prohibits us from displaying our final sale price here. In order to see our price, please add this item to your cart.
Morningstar SL-20L-12 Summary
Product Type
Charge Controller
Battery Voltage
12 Volts
Charging Type
Output Current
20 Amps

Morningstar SL-20L-12 Sunlight 20 Lighting Controller 12V

SL20-12 Sunlight 20 Lighting Controller 12V, 20 Amp

Morningstar’s advanced SunLight solar lighting controller combines the SunSaver design with a microcontroller for automatic lighting control functions.

This technology provides:

  • Proven Reliability
  • Precise Lighting Control
  • PWM Battery Charging


  • Rotary digital switch to select among 10 lighting options
  • Test button flashes red LED to confirm correct rotary switch selection
  • Test button turns lights on for 5 minutes (in LVD limited to 3 times)
  • LVD overrides lighting timer
  • Sunrise overrides lighting timer
  • Timer accuracy is within 2 seconds

Four Versions Available:

  • 12 Volt: 10 and 20 amp ratings
  • 24 Volt: 10 and 20 amp ratings

Features of the Morningstar SL-20L-12 Sunlight 20 Lighting Controller 12V:

  • Microcontroller digital accuracy
  • Fully automatic operation
  • Ten field adjustable lighting control options
  • Special on/off/on functions
  • Manual test capability
  • LVD override protection
  • Detects day and night using the PV array
  • Suitable for all 12/24 Vdc lamps
  • Sealed/Flooded battery select
  • Temperature compensation
  • Parallel with a SunSaver for 40 amps solar
  • Includes SunSaver battery charging circuit

Mechanical Specifications
Wire size #10 AWG (5.2 mm2)
Anodized aluminum case
Marine rated terminals
Epoxy encapsulated
Weight is 9 oz (0.26 kg)

Also Known As:
SL 20L 12

SunLight Electrical Specifications12 Volt24 Volt
Rated Solar Input10/20 A
Rated Load10/20 A
25% Current Overload5 min.
Regulation Voltage: Sealed Battery14.1 V28.2 V
Flooded Battery14.4 V28.8 V
Load Disconnect11.7 V23.4 V
LVD Reconnect12.8 V25.6 V
Temp. Comp. (mV/°C)-27-54
Self-consumption8 mA9 mA
Operating Temp.-40 to +85°C
Note: Specifications and pricing of the Morningstar SL-20L-12 Sunlight 20 Lighting Controller 12V subject to change without notice. Illustrations and descriptions of the Morningstar SL-20L-12 do not claim to be complete or exhaustive.

Customers Who Bought the Morningstar SL-20L-12 Sunlight 20 Lighting Controller 12V Also Purchased:

PaypalVisaMastercardAmerican ExpressDiscover
Manufacturer Info
Share Product
Share via E-Mail 
 Share on Facebook Share on Twitter