Hi. I have an external PIR security light that came with a remote control but unsure how to use is wisely. The remote has 'HEC' and the Model No. HO-094 on the back. It has four buttons, 2 for ON and 2 for OFF but no other markings. Incidentally, the light came with the house when I purchased it and has no markings on the light itself. Can you help? Many thanks. TRACY