The Manuals for the Tracer Series Products
http://www.ev-power.eu/docs/pdf/GWL-REG1224-10ME-Tracer-10A-Manual.pdf
http://www.ev-power.eu/docs/pdf/GWL-REG1224-20ME-Tracer-20A-Manual.pdf
http://www.ev-power.eu/docs/pdf/GWL-REG1224-30ME-Tracer-30A-Manual.pdf
http://www.ev-power.eu/docs/pdf/GWL-REG1224-45ME-Tracer-45A-Manual.pdf
You can order on-line here: http://www.ev-power.eu/Solar-GridFree/