bayite volt-amp meter DC 5–120V 100A Hall-effect — isolated panel meter with through-hole clamp

bayite's DC 5–120V 100A volt-amp meter with a Hall-effect sensor is an isolated panel meter that displays DC voltage or bi-directional current up to 100A with a through-hole clamp for heavy-gauge wiring.

This compact meter combines an isolated Hall-effect current sensor with a clear digital readout for voltage and positive/negative current measurements. It accepts DC voltages from 5 to 120 volts and measures up to 100 amps, while the sensor’s through-hole design accommodates thicker conductors and eliminates the need to cut or splice the circuit. The electrical isolation protects sensitive electronics and enhances user safety when monitoring higher-voltage systems.

How does the Hall-effect sensor make installation easier?

The included through-hole Hall-effect sensor slips around an existing conductor, so you rarely need to interrupt your circuit. Its 19 mm (3/4 inch) aperture fits many battery and busbar cables used in automotive, marine, and off-grid systems.

• Through-hole clamp fits large-diameter wire without splicing.
• Looping the conductor through the sensor increases sensitivity for low currents.
• No direct electrical contact with the measured conductor—safer installation.
• Mountable sensor body for steady, repeatable placement.

What ranges and readings will I see on the meter?

The display toggles between DC voltage and current readings, showing voltages from 5 to 120 volts and currents from 0 to 100 amps. It can show negative or positive current flow, so you can monitor charging versus discharging in battery systems.

• Voltage display: 5–120 V DC suitable for common battery banks and DC buses.
• Current display: 0–100 A with indication of direction (positive/negative).
• Clear numeric readout for quick status checks at a glance.
• Selectable display mode without changing wiring.

How does the meter protect my equipment and improve safety?

The meter’s Hall-effect sensor provides galvanic isolation, meaning the sensing element does not share a direct electrical connection with the monitored conductor. This reduces the risk to sensitive electronics and lowers shock hazards during monitoring and maintenance.

• Isolated sensor keeps meter electronics separate from high-voltage circuits.
• Non-invasive measurement minimizes installation risk to live systems.
• Compatible with protective enclosures or panel mounting for added safety.
• Reduces need for high-side wiring modifications that can create fault paths.

How can I get accurate readings for very small currents?

If the current you need to detect is near the meter’s lower sensitivity limit, you can pass the conductor through the sensor multiple times to multiply the effective signal. This practical trick boosts the detectable value without swapping sensors.

• Loop conductor several turns through the sensor to amplify the reading.
• Each pass increases the sensor’s output proportionally (e.g., 10 passes → 10× signal).
• Useful for light-draw loads where direct detection may be marginal.
• Maintain neat, untwisted loops to avoid introducing measurement errors.

Who is this for? Technicians, hobbyists, and system integrators working with DC power—such as RV and marine electricians, solar off-grid installers, e-bike and EV tinkerers, and battery-bank managers—will appreciate this meter’s non-invasive through-hole sensor, broad voltage range, and clear direction-aware current readout. It’s suited for panel mounting in control boxes or dashboards where safe, isolated monitoring is required without heavy rewiring.