Securitron's BPSS is capable of powering most any single point access control device and fail secure lock (intermittent duty only) using sustainable solar and battery operated power. The BPSS is the only out-of-the-box solution specifically designed for remote electric lock control. Select the BPSS-10 or BPSS-20 (10 or 20 charging Watts respectively) based on the solar activity in the area/region where installed.