The Tank light is a conservation friendly night light. It houses a a turret with a cannon which diffuses the emitted light. It can run on either 3 or 4 regular AA or rechargeable AA batteries. Originally $80.
It has 3 levels of brightness, photo sensor, battery level indicator, and you can set the sensitivity level. The very intelligent UI remembers the last state which was set.
You can use partially spent batteries to run this light.
Runs about 2 weeks on almost dead batteries.
Runs a couple month+ on new or fully charged batteries, Sensored to go off during daylight hours.
Specifications for the 4AA Tank Light
High – 5mA
Medium – 2mA
Low – 0.5mA
High Sensitivity: - ~5lux to turn on, ~15lux to turn off
Medium Sensitivity – 22 lux to turn on, 28 lux to turn off
Low Sensitivity - 106 lux to turn on, 140 lux to turn off
Notes:All measurements taken in Medium Output level.
Photo sensor sensitivity varies from unit to unit.Numbers are typical and only represent approximate levels of sensitivity.Some units can be more sensitive