Economical due to low power usage and no bulb to change (minimum working life of 50,000 hours), no heat output, “unlimited” number of on/off cycles.
Excellent luminous efficacy (lumen per watt).
Economical to buy, excellent colour rendering (CRI 100/100), warm colour temperature, but high heat output and power use.
Low luminous efficacy (lumen per watt).
Uniform heating light.
Ultraviolet diagnostic light (black light).