The STL-5 Test Lamp are fantastic for accurate testing to see if a circuit is Dead - It is a visual tester - either the lamp lights or it doesn't when used to test a 240v or 415v Circuit. Electricians find this tool invaluable and always have a set handy. Tafe's swear by them for there ease of use and durability.

The director of Sparky Direct is an electrician and he owns a set of test lamps, he has had them for approx 25 years and he first bought one when he was an apprentice. 

(Remember to always test the tester as you would with any testing tool)

Features:

• SEW Fused Low Voltage Test Lamps
• Low voltage test lamps are the simplest and most reliable instruments for low voltage mains testing and proving for dead
• Works for both 240V / 415V
• Test to prove dead on low voltage system Overhead lines, underground pillars and pits, low voltage switchboards
• Rugged and Reliable construction and design - includes eveything you need to start using the tool immediately. 
• Worth it's weight in gold.