The timeguard eco36pir energy save pir security light features a 36w energy saving bulb saving almost 75 of energy as compared to a standard 150w halogen bulb cutting the running cosst75 energy savinghigh output with low running costs36w energy saving bulb provides approx 75 energy saving compared to a standard 150w halogen bulbadjustable integral pir detectordetects body heat movement up to 12 metres away and automatically switches the light on160 degree adjustable detection anglemanual on