




⚡ Never miss a spark—ignite your diagnostics with precision and confidence!
The Calterm 66331 Tru-Spark Ignition Firing LED Indicator is a compact, battery-powered tool featuring an exclusive adjustable sensitivity dial to isolate plug wires and prevent false signals. Equipped with green and red LEDs for clear operational and ignition feedback, it boasts a rugged ABS housing designed to resist oil and endure tough shop conditions. Compatible with both DIS and conventional ignition systems, this precision tester is engineered for professional-grade ignition diagnostics.
| Brand | Calterm |
| Power Source | Battery Powered |
| Style | Adjustable |
| Color | Green,Red |
| Item dimensions L x W x H | 2.2 x 5.9 x 1.4 inches |
| Specification Met | CE, ETL, RoHS, UL |
| Measurement Type | Voltage |
| UPC | 971473127474 046494020230 521227771189 956257381846 |
| Manufacturer | Calterm |
| Global Trade Identification Number | 00046494020230 |
| Model | 66331 |
| Item Weight | 0.634 ounces |
| Product Dimensions | 2.2 x 5.9 x 1.4 inches |
| Item model number | 66331 |
| Is Discontinued By Manufacturer | No |
| Manufacturer Part Number | 66331 |
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