Built for home, commercial, and industrial work
The 3000 detects alternating current voltage across the full professional range, from 50 volts on residential circuits up to 1000 volts in commercial and light industrial applications. The sensor is calibrated to separate hot wires from neutral and ground lines, so you can identify the live conductor inside a crowded junction box without picking up false signals from wires nearby. This accuracy is the reason licensed electricians use the 3000 for rough-in inspections, troubleshooting GFCIs, verifying outlets, checking motor leads, and confirming a circuit is truly de-energized before working on it.
Built for Daily Use, CAT IV Construction
he body of the 3000 is molded from non-flammable, high-impact polycarbonate that meets CAT IV safety standards for industrial and commercial voltage testing. The CAT IV rating is the highest category in the IEC 61010 safety specification, which means the tester is rated for use at the origin of low-voltage installations including service entrances, outdoor distribution lines, and main service panels. The polycarbonate shell resists impact, flame, and the dust and moisture that get into every tool bag, and the internal electronics are potted to handle years of drops, rattles, and temperature swings without drifting out of calibration.
Clips into a shirt pocket or tool belt. Goes everywhere you do.
The 3000 is shaped and sized like a pen so it fits in a shirt pocket, a tool pouch, or the small slot on a leather tool belt. The pocket clip is reinforced and sits flush, so the tester does not catch on wiring or shift when you are climbing a ladder. This form factor is why the 3000 has become the everyday carry voltage tester for electricians, HVAC technicians, home inspectors, maintenance engineers, elevator mechanics, and DIY homeowners who want a professional-grade detector that is easy to bring along on every job.
Trusted by licensed electricians, inspectors, and facility pros
Santronics built the first pen-sized non-contact voltage tester over 30 years ago, and we still build every 3000 tester in the United States. This detector is designed for professionals who need a reliable second opinion before they touch a wire, so every unit is calibrated to detect AC voltage between 50 and 1000 volts and built to meet CAT IV safety standards for commercial and industrial environments. The always-on design means the tester is ready the moment you pull it from your pocket, and the high-impact polycarbonate body is made to survive years of daily use on real job sites.
Instant Audible and Visual Alerts
Bright SMD LED. Loud beep. Clear feedback in any environment
The moment the 3000 senses AC voltage between 50 and 1000 volts, a high-intensity SMD LED lights up and a clear audible beep sounds. The dual-alert design is intentional because real job sites are loud, dim, and sometimes both at once. If you are inside a noisy mechanical room, you can still see the LED through the polycarbonate body. If you are working inside a dark attic or crawlspace, the beep confirms what the light is telling you. Either signal alone is enough, and together they give you confirmation you can trust before you touch anything.
Why Electricians Switch to Santronics
Most non-contact voltage testers make you press a button before testing. Forget to press it, and you could touch a live wire thinking it's dead. The Santronics 3000 eliminates that risk entirely — it's always on and always ready. No buttons, no modes, no confusion. Just bring the tip near a wire and get an immediate answer.
The Right Sensitivity Makes All the Difference
Over-sensitive testers beep at everything — dead wires, nearby neutrals, even your phone charger. Under-sensitive testers miss live wires entirely. The Santronics 3000 is precision-calibrated to detect only the wire you're actually testing. In a crowded junction box, it can distinguish the hot conductor from the neutral right next to it.
CAT IV Certified for Professional Environments
CAT IV is the highest safety certification for voltage detection equipment, rated for use at the service entrance and primary supply level. The non-flammable polycarbonate housing meets industrial safety standards and is built to handle the demands of daily professional use.
Made in America Since 1990
Santronics is the original innovator behind non-contact voltage detection technology in the United States. Every unit is designed and manufactured in the USA, trusted by licensed electricians, home inspectors, and facility maintenance teams. When your safety depends on your tools, where they're made matters.
 Santronics 3000 Non-Contact Voltage Tester |  Santronics 3115 AC Voltage Sensor Voltage Tester |  Santronics DC Detector 6-50V, Industrial Strength Sensor with Audio-Visual | |
|---|---|---|---|
| Customer Reviews | — | — | — |
| Price | — | — | — no data |
| Detection Type | Non-Contact | Non-Contact | Contact Probe with Alligator Clip |
| Voltage Range | 50 to 1000V AC | 50 to 1000V AC | 6 to 50V DC |
| Current Type | AC Only | AC Only | DC Only |
| Alert Type | Bright SMD LED and Audible Beep | LED and Audible Beep | LED and Audible Beep |
| Power Switch | None, Always Ready | None, Always Ready | None, Always Ready |
| Probe Tip | Polycarbonate Sensor Tip | Polycarbonate Sensor Tip | Rust-Proof Stainless Steel Tip |
| Best For | Industrial and Commercial Electricians, Inspectors, Facility Pros | Residential and Light Commercial Electricians and DYIers | Automotive Techs and Low-Voltage DC Troubleshooting |
Built for home, commercial, and industrial work
The 3000 detects alternating current voltage across the full professional range, from 50 volts on residential circuits up to 1000 volts in commercial and light industrial applications. The sensor is calibrated to separate hot wires from neutral and ground lines, so you can identify the live conductor inside a crowded junction box without picking up false signals from wires nearby. This accuracy is the reason licensed electricians use the 3000 for rough-in inspections, troubleshooting GFCIs, verifying outlets, checking motor leads, and confirming a circuit is truly de-energized before working on it.
Built for Daily Use, CAT IV Construction
he body of the 3000 is molded from non-flammable, high-impact polycarbonate that meets CAT IV safety standards for industrial and commercial voltage testing. The CAT IV rating is the highest category in the IEC 61010 safety specification, which means the tester is rated for use at the origin of low-voltage installations including service entrances, outdoor distribution lines, and main service panels. The polycarbonate shell resists impact, flame, and the dust and moisture that get into every tool bag, and the internal electronics are potted to handle years of drops, rattles, and temperature swings without drifting out of calibration.
Clips into a shirt pocket or tool belt. Goes everywhere you do.
The 3000 is shaped and sized like a pen so it fits in a shirt pocket, a tool pouch, or the small slot on a leather tool belt. The pocket clip is reinforced and sits flush, so the tester does not catch on wiring or shift when you are climbing a ladder. This form factor is why the 3000 has become the everyday carry voltage tester for electricians, HVAC technicians, home inspectors, maintenance engineers, elevator mechanics, and DIY homeowners who want a professional-grade detector that is easy to bring along on every job.
Trusted by licensed electricians, inspectors, and facility pros
Santronics built the first pen-sized non-contact voltage tester over 30 years ago, and we still build every 3000 tester in the United States. This detector is designed for professionals who need a reliable second opinion before they touch a wire, so every unit is calibrated to detect AC voltage between 50 and 1000 volts and built to meet CAT IV safety standards for commercial and industrial environments. The always-on design means the tester is ready the moment you pull it from your pocket, and the high-impact polycarbonate body is made to survive years of daily use on real job sites.
Instant Audible and Visual Alerts
Bright SMD LED. Loud beep. Clear feedback in any environment
The moment the 3000 senses AC voltage between 50 and 1000 volts, a high-intensity SMD LED lights up and a clear audible beep sounds. The dual-alert design is intentional because real job sites are loud, dim, and sometimes both at once. If you are inside a noisy mechanical room, you can still see the LED through the polycarbonate body. If you are working inside a dark attic or crawlspace, the beep confirms what the light is telling you. Either signal alone is enough, and together they give you confirmation you can trust before you touch anything.
Why Electricians Switch to Santronics
Most non-contact voltage testers make you press a button before testing. Forget to press it, and you could touch a live wire thinking it's dead. The Santronics 3000 eliminates that risk entirely — it's always on and always ready. No buttons, no modes, no confusion. Just bring the tip near a wire and get an immediate answer.
The Right Sensitivity Makes All the Difference
Over-sensitive testers beep at everything — dead wires, nearby neutrals, even your phone charger. Under-sensitive testers miss live wires entirely. The Santronics 3000 is precision-calibrated to detect only the wire you're actually testing. In a crowded junction box, it can distinguish the hot conductor from the neutral right next to it.
CAT IV Certified for Professional Environments
CAT IV is the highest safety certification for voltage detection equipment, rated for use at the service entrance and primary supply level. The non-flammable polycarbonate housing meets industrial safety standards and is built to handle the demands of daily professional use.
Made in America Since 1990
Santronics is the original innovator behind non-contact voltage detection technology in the United States. Every unit is designed and manufactured in the USA, trusted by licensed electricians, home inspectors, and facility maintenance teams. When your safety depends on your tools, where they're made matters.
Santronics 3000 Non-Contact Voltage Tester | Santronics 3115 AC Voltage Sensor Voltage Tester | Santronics DC Detector 6-50V, Industrial Strength Sensor with Audio-Visual | |
|---|---|---|---|
| Customer Reviews | — | — | — |
| Price | — | — | — no data |
| Detection Type | Non-Contact | Non-Contact | Contact Probe with Alligator Clip |
| Voltage Range | 50 to 1000V AC | 50 to 1000V AC | 6 to 50V DC |
| Current Type | AC Only | AC Only | DC Only |
| Alert Type | Bright SMD LED and Audible Beep | LED and Audible Beep | LED and Audible Beep |
| Power Switch | None, Always Ready | None, Always Ready | None, Always Ready |
| Probe Tip | Polycarbonate Sensor Tip | Polycarbonate Sensor Tip | Rust-Proof Stainless Steel Tip |
| Best For | Industrial and Commercial Electricians, Inspectors, Facility Pros | Residential and Light Commercial Electricians and DYIers | Automotive Techs and Low-Voltage DC Troubleshooting |