> **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

# Gravity: UART Fiber Optic Transceiver Module

**Type:** Product page · **SKU:** TEL0153 · **Brand:** [DFRobot](https://core-electronics.com.au/brands/dfrobot-australia)
**Page:** https://core-electronics.com.au/gravity-uart-fiber-optic-transceiver-module.html ([markdown](https://core-electronics.com.au/gravity-uart-fiber-optic-transceiver-module.html.md))

The Gravity: UART Fiber Optic Transceiver Module with complete electrical isolation for preventing electromagnetic interference can run at 2000000 baud in...

## Pricing

- **Price:** $42.95 (inc GST) — $39.05 AUD, exc GST
- **Quantity discounts:** 6+ $37.09 (exc GST) · 12+ $35.53 (exc GST)

## Availability & dispatch

- Available with a lead time — expect dispatch between Aug 18 and Aug 24.

## How to buy

- **Build a cart:** compose `https://core-electronics.com.au/cart/link?items=TEL0153:1` (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/TEL0153:1.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

Still make do with the hard and thick shielded twisted pair for remote signal-transmitting? And even drop the baud rate again and again just for transmission stability? Now get rid of these problems by using this Gravity: UART Fiber Optic Transceiver Module from DFRobot!

With complete electrical isolation for preventing electromagnetic interference, this module runs at 2000000 baud at any time within a distance of up to 10km. Besides, it features lightning protection and can share cable trunking with strong power. Also, users can use it with a passive optical splitter to realize one-to-many star networking.

Two transceiver modules for only half the price of shielded twisted pair can provide users with long-distance & interference-free fiber-optic communication, good value for money!

**![Gravity: UART Fiber Optic Transceiver Module](https://core-electronics.com.au/attachments/localcontent/InterfaceandPin_14101c692a1.png)**

**Interface & Pin**

**Pinout**

| **Name** | **Description** |
|---|---|
| **Gravity: UART** | UART interface, connect to MCU or sensor |
| **PWR LED** | Power indicator, turns ON when powered on |
| **SD LED** | Indicator for optical fiber disconnection, which lights up when the fiber optic disconnection is detected |
| **TX LED** | Indicator for fiber optic transmitting, which blinks when transmitting signal |
| **RX LED** | Indicator for fiber optic receiving, which blinks when receiving signal |
| **SC Fiber Optic Interface** | Connect to SC fiber optic interface |

SD LED can not show all the fiber disconnections or unstable transmissions. Please use a red pen, optical power meter and other tools to check error when a connection problem occurs.

**![Gravity: UART Fiber Optic Transceiver Module](https://core-electronics.com.au/attachments/localcontent/Wiring-Instructions_647501ffee2.jpg)**

**Wiring Instructions**

###  Features

12. With complete electrical isolation
13. Lightning protection
###  Applications

15. Fiber-optic communication
16. One-to-many star networking
###  Specification

18. Supply Voltage: 3.3V~5V
19. Signal Voltage: 3.3V~5V
20. Maximum Speed: 2000000 baud
21. Communication Distance: 10km
22. Operating Wavelength: 1310nm
23. Fiber Optic Type: Single Mode
24. Fiber Optic Interface: SC
25. Operating Temperature: 0~70°C
  **Documents**27. [Product wiki](https://wiki.dfrobot.com/SKU_TEL0153_Gravity_UART_Fiber_Optic_Transceiver_Module)
28. [Dimensions](https://core-electronics.com.au/attachments/localcontent/920e117ee2033e0be88f6e5be3d7e8ed_18122eee083.pdf)
###  Parts List

30. Gravity: UART Fiber Optic Transceiver Module x1
31. Gravity 4P Connector x1

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/T/E/TEL0153-1.jpg)