> **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: Digital Wireless Transmit Switch (433MHz)

**Type:** Product page · **SKU:** TEL0140 · **Brand:** [DFRobot](https://core-electronics.com.au/brands/dfrobot-australia)
**Page:** https://core-electronics.com.au/gravity-digital-wireless-transmit-switch-433mhz.html ([markdown](https://core-electronics.com.au/gravity-digital-wireless-transmit-switch-433mhz.html.md))

Wireless switch with strong penetrability and easy expansion...

## Pricing

- **Price:** $11.90 (inc GST) — $10.82 AUD, exc GST
- **Quantity discounts:** 6+ $10.27 (exc GST) · 12+ $9.85 (exc GST)

## Availability & dispatch

- In stock, ships same business day if ordered before 2PM (Australia/Sydney).
- We can dispatch 2 today, and up to 200 more in 8–12 days.

## How to buy

- **Build a cart:** compose `https://core-electronics.com.au/cart/link?items=TEL0140:1` (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/TEL0140:1.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

When building a project that needs to transmit some simple signals wirelessly, have you been bothered by the any of the following problems: Bluetooth's cumbersome AT command configuration and high cost, Wifi's signal limitations and high power consumption, IR emission angle and inability to penetrate through the walls...

This Gravity: Digital Wireless Swtich might be just what you need! Based on 433Mhz RF communication technology, the module includes a transmitter and receiver and features the advantages of simple operation,strong penetration, and ultra-low standby power consumption. It is able to transmit digital signals and compatible with any controller that can read and write digital signals. These modules are used on a wide variety of applications that require wireless control, such as, remote control, wireless doorbell, wireless signal transmission, upgrading wired buttons to wireless buttons, etc.

**Note:** The transmitter module and the receiver module each ship with 1 Gravity: digital sensor cable by default. If you need more, please purchase separately (FIT0011)

433MHz is a certification-free frequency band in most parts of the world, please pay attention to local policies and laws and regulations when using it

**![](https://core-electronics.com.au/media/wysiwyg/product_images/Board-overview-TEL0142.jpg)**

**Board overview**

**Features**

- 15 button states of the transmitter
- Pairing function for the receiver
- Support one-transmit and multiple-receive
- Support one-receive and multiple-transmit
- Multiple working modes: inching, latching, self-locking, and interlocking
 
**Applications**

- Remote control
- Wireless doorbell
- Wireless signal transmission
- Upgrading wired buttons to wireless buttons
 
**Specification**

- Working voltage: 3.3~5.0V DC
- Stable transmission distance: 15M indoor
- Transmitter emission current: 10mA@5V
- Transmitter standby current: <10uA@5V
- Receiver emission current: 6mA@5V
- Receiver standby current: 3mA@5V
- Input signal: digital
- Number of interfaces: 4
- Working frequency: 433Mhz
- Transmitter size: 47x32mm
- Receiver size :37x32mm
- Mounting hole size: inner diameter 3.1mm/outer diameter 6mm
 
**Documents**

- [Product wiki](https://wiki.dfrobot.com/Gravity_Digital_Wireless_Switch_SKU_TEL0140_TEL0142)
- [Schematic](https://core-electronics.com.au/attachments/localcontent/343d58740d9aafcaf2ad42e83b3bbaa0_55866e2e72e.pdf)
- [Dimensions](https://core-electronics.com.au/attachments/localcontent/1af09957f25f1cd322fa140f740fae72_820384e19b0.pdf)
 
**Parts List**

- Gravity: Digital Wireless Switch x1
- Gravity: Digital Sensor Cable x1

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/i/m/image_3525.jpg)