# Extech SD900 3-Channel DC Current Datalogger

# Extech SD900 3-Channel DC Current Datalogger

## Key Features At A Glance

-   Triple LCD simultaneously displays three DC current (mA) channels on a single meter
-   Date/time-stamps and stores readings to an SD card in Excel-ready format for easy PC transfer
-   User-selectable sampling rate: 2, 5, 10, 30, 60, 120, 300, 600 seconds, or Auto
-   DC mA range 0 to 20mA, 0.01mA maximum resolution, basic accuracy ±(0.5% + 0.02mA)
-   Approximately 2.7M readings stored using a 4GB SD memory card
-   Ships complete with six AAA batteries, SD card, universal AC adaptor (US/EU/UK/AUS plugs), 3 input connect sockets, and mounting bracket
-   Compact 5.2 x 3.1 x 1.3 in (132 x 80 x 32 mm) enclosure weighing 7 oz (199 g)

The Extech SD900 is a 3-Channel DC Current Datalogger that lets a technician monitor and record DC mA values from three external sensors, transducers, and other sources using one meter. Alongside each measurement it captures the time and date the reading was taken, and a large triple LCD shows all three DC current channels at once so the full picture of a measurement setup is visible on a single display.

The SD900 is suited to a range of recording and monitoring tasks, including pH recording, 4 to 20mA recording, low-level signal monitoring, photovoltaic studies, and battery studies. It also serves process control, R&D, medical and pharmaceutical work, and environmental studies, making it a flexible logger wherever low-level DC current signals need to be tracked over time.

ValueTronics supplies the SD900 from its own 20,000 sq ft secure warehouse at 1675 Cambridge Drive in Elgin, Illinois, where we stock and hold our own inventory rather than sourcing each order on demand.

## Brand Heritage

Extech Instruments operates as part of FLIR Systems, the brand named in this product's copyright line. Its measurement products are issued under the Extech name within the broader FLIR organization.

## Accessories Supplied

-   Six AAA batteries
-   SD memory card
-   Universal AC Adaptor with multi-plugs (US, EU, UK, AUS)
-   3 input connect sockets
-   Mounting bracket

## Product Core & Specifications

Specification

Value

DC mA Current

Range

0 to 20mA

Max. Resolution

0.01mA

Basic Accuracy (%rdg +digits)

±(0.5% + 0.02mA)

General

Memory

Approx. 2.7M readings using 4GB SD memory card

Data Sampling Rate

2, 5, 10, 30, 60, 120, 300, 600 seconds or Auto

Dimensions

5.2 x 3.1 x 1.3" (132 x 80 x 32mm)

Weight

7oz (199g)

UPC Code

793950439005

## About this New unit

This is a brand-new, factory-sealed unit, supplied exactly as it arrives from the manufacturer and backed by the full manufacturer warranty. For the exact configuration, available options, included accessories, or current lead time for your application, our Test Architects can confirm the details before you order.

ValueTronics supplies both new and used test and measurement equipment. New units ship factory-sealed, exactly as received from the manufacturer; every used unit is inspected and functionally verified in-house at our 20,000 sq ft secure facility in Elgin, Illinois before it ships. Our Test Architects can help you select the condition, calibration, and configuration that fit your application.

**Please review the Manufacturer's Data Sheet to verify published specifications. Feedback on this webpage is always welcome — please reach out to your Test Architect at any time for questions or concerns. Thank you, we truly appreciate you being our customer.**

## Details

- **Price:** 419.99 USD
- **Vendor:** Extech
- **Type:** Data Log
- **Tags:** Data Logger, Extech, Manufacturers, Meters & DAQ, product_manual_group_2, Product_new

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 419.99 USD | In stock |

## Images

- Extech SD900 3-Channel DC Current Datalogger

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> Source: [ValueTronics](https://valuetronics.com/products/sd900-extech-data-logger-new)
> Updated: 2026-06-20