Other Electrical Components
ALX-HD16-22D/T 22mm Test Indicator Lamp | Push to Test
22 mm test indicator lamp with a push-to-test lens, 29 mm bezel, 20 mm body, 49.5 mm overall length. Red, green, yellow, blue or white, AC 110-380 V or AC/DC 6-220 V.
The HD16-22D/T adds a test function to a standard 22 mm indicator: pressing the front cap closes a contact across the lamp so the operator can prove the LED and its circuit are alive without waiting for the machine to reach that state. It is the lamp specified where a "lamp proving" step is part of the maintenance routine or the machine safety check.
Technical Specifications
Item | Specification |
Mounting hole | 22 mm |
Bezel diameter | 29 mm |
Body diameter | 20 mm |
Total length | 49.5 mm |
Bezel height | 13.5 mm |
Housing material | Plastic, black |
Lens | Translucent polycarbonate |
Light source | Integrated LED |
Rated voltage | AC 110-380 V, or AC/DC 6-220 V (two versions) |
Lens colours | Red, green, yellow, blue, white |
Max. panel thickness | 8 mm |
Termination | Screw terminals |
Mounting | Single round hole, nut and washer supplied |
Front cap | Push to test - press to close the lamp circuit |
Body length | Longer than the 22DS to house the test mechanism |
The test cap closes the lamp circuit only while it is held in; the indication returns to normal when released. The lamp is 49.5 mm long overall, so check the depth behind the panel before fitting it into a shallow enclosure.
Design Features
- Push-to-test cap lets an operator prove the lamp and its wiring without simulating the machine state.
- Same 22 mm cut-out as the standard 22DS, so a test lamp can replace a plain lamp on an existing panel.
- Test contact acts only while pressed - the lamp cannot be left latched in test.
- Clear front cap over the coloured lens keeps the test surface distinct from the indication.
- Screw terminals on the rear body for ring or fork lugs.
Model Options
Model | Type | Mounting hole | Bezel dia. | Body dia. | Total length | Bezel height |
HD16-16BS | LED indicator lamp | 16 mm | 18 mm | 14.1 mm | 32.5 mm | 9.5 mm |
HD16-16DS | LED indicator lamp | 16 mm | 18 mm | 14.1 mm | 32.5 mm | 9.5 mm |
HD16-22DS | LED indicator lamp | 22 mm | 30 mm | 20 mm | 45 mm | 15 mm |
HD16-22DH | LED indicator lamp | 22 mm | 30 mm | 20 mm | 46 mm | 15 mm |
HD16-30DS | LED indicator lamp | 30 mm | 36 mm | 21.6 mm | 40 mm | 15 mm |
HD16-22D/T | Test indicator lamp (push-to-test) | 22 mm | 29 mm | 20 mm | 49.5 mm | 13.5 mm |
HD16-22/RG | Double colour indicator lamp | 22 mm | 29 mm | 20 mm | 51.5 mm | 13.5 mm |
Order by model code, lens colour and voltage, for example "HD16-22DS, red, AC/DC 24 V". Colours can be mixed in one shipment - tell us the quantity per colour and we will quote against it. The same panel cut-out fits every lamp of the same mounting size, so a 16 mm lamp can be swapped for another 16 mm lamp without reworking the panel.
Applications
Machine safety and lamp-proving routines, fire and alarm panels, lift and hoist control, generator and changeover panels, and maintenance benches where a lamp has to be proved before a run.