> **Source:** Core Electronics is an Australian maker-electronics retailer and manufacturer based in Newcastle, NSW, run by a team of makers and educators. We design and manufacture our own product lines (PiicoDev, CE originals) and are official retailers for iconic maker and industrial brands including Raspberry Pi, Arduino, Adafruit, SparkFun and DFRobot. Orders ship Australia-wide from our Newcastle warehouse. Prices are in AUD and include GST. Pricing, stock and dispatch on this page are generated from the store's live catalog. Full machine-readable index: https://core-electronics.com.au/llms.txt

# Digital Voltmeter Ammeter 30V 10A Red and Blue

**Type:** Product page · **SKU:** TOL-18374 · **Brand:** [Sparkfun](https://core-electronics.com.au/brands/sparkfun-australia)
**Page:** https://core-electronics.com.au/digital-voltmeter-ammeter-30v-10a-red-and-blue.html ([markdown](https://core-electronics.com.au/digital-voltmeter-ammeter-30v-10a-red-and-blue.html.md))

While a DMM is great for a quick check, a panel mount current and volt meter is handy when you need to constantly monitor a system. Battery backed systems...

## Pricing

- **Price:** $14.70 (inc GST) — $13.36 AUD, exc GST
- **Quantity discounts:** 5+ $12.96 (exc GST) · 25+ $12.69 (exc GST) · 100+ $12.16 (exc GST)

## Availability & dispatch

- Available with a lead time — expect dispatch between Sep 02 and Sep 08.

## How to buy

- **Build a cart:** compose `https://core-electronics.com.au/cart/link?items=TOL-18374:1` (comma-separated SKU:qty pairs) and share the link. Opening it shows a confirmation page with live pricing and stock before anything is added to the cart.
- **Verify the cart first:** fetch `https://core-electronics.com.au/cart/link/TOL-18374:1.md` for live line prices (inc & exc GST, quantity discounts applied), stock and dispatch estimates, and totals. Append `/to/{AU-postcode}` (or `/to/{country-code}:{postcode}`) before `.md` for delivery options and prices to that destination. Unknown, retired, or out-of-stock SKUs are flagged. (Query form `cart/link.md?items=...` also works but some robots parsers refuse query strings here.)
- **Checkout** is completed on-site and includes a captcha at the payment step. Share the cart link; checkout takes it from there.
- **Search the catalogue:** `https://core-electronics.com.au/search/{query}.md` (URL-encode the query; pages 2-3 at `search/{query}/{page}.md`; `search.md?q=` also works)
- **Payment methods, purchase orders, policies and contact details:** https://core-electronics.com.au/llms.txt
## Description

While a DMM is great for a quick check, a panel mount current and volt meter is handy when you need to constantly monitor a system. Battery backed systems can be quickly diagnosed by checking the overall system voltage; run times can be calculated based on the instantaneous current consumption rates. For all those times and more, it's just super handy to have a meter available.

This digital combination DC current/volt meter measures up to 30V and 10A using approximately 15mA quiescent current. All units come pre-calibrated but can be further calibrated once installed using small trimpot on the back side of the device.

The wiring diagram shows a normal hookup. The thicker 2-pin wiring harness is for the ammeter and is normally wired into the current return path to the battery or ground. The thinner 3-pin wiring harness if for the voltmeter. The black wire on the 3-pin harness is internally connected to the ammeter and can be left NC (not connected) or to ground. The Red wire of the ammeter should be attached to the system and the Black wire of the ammeter should be connected to ground otherwise the system will work fine, but the meter will display 0.00 as it cannot display negative values.

- Dimensions: 
    - Bevel: 48 x 29 x 3mm
    - Base: 19 x 44.5 x 25.7mm
    - Cutout: 46 x 27mm
- Max Current: 10A
- Max Voltage: 30V
- Minimum Operating Voltage: 3.3V
- Accuracy: 
    - Current: ±1%
    - Voltage: ±0.1%
- Quiescent: 15mA avg

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/i/m/image_653.jpg)