> **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 Switch Kit - Transmit and Receive (433MHz) **Type:** Product page · **SKU:** TEL0140-1 · **Brand:** [DFRobot](https://core-electronics.com.au/brands/dfrobot-australia) **Page:** https://core-electronics.com.au/gravity-digital-wireless-switch-kit-transmit-and-receive-433mhz.html ([markdown](https://core-electronics.com.au/gravity-digital-wireless-switch-kit-transmit-and-receive-433mhz.html.md)) Wireless switch with strong penetrability and easy expansion... ## Pricing - **Price:** $24.50 (inc GST) — $22.27 AUD, exc GST - **Quantity discounts:** 6+ $21.16 (exc GST) · 12+ $20.27 (exc GST) ## Availability & dispatch - Available with a lead time — expect dispatch between Aug 24 and Aug 28. ## How to buy - **Build a cart:** compose `https://core-electronics.com.au/cart/link?items=TEL0140-1:1` (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/TEL0140-1:1.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 **Introduction****Note:** This kit includes a [Gravity: Digital Wireless Transmit Switch (433MHz)](https://core-electronics.com.au/gravity-digital-wireless-transmit-switch-433mhz.html) and a [Gravity: Digital Wireless Receive Switch (433MHz).](https://core-electronics.com.au/gravity-digital-wireless-receive-switch-433mhz.html) The transmitter module and the receiver module each ship with 1 Gravity: digital sensor cable by default. If you need more, please click [here ](https://core-electronics.com.au/gravity-4pin-iic-i2c-uart-sensor-cable-10pcs.html)to purchase separately. 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 When building a project that needs to transmit some simple signals wirelessly, have you been bothered by 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 Switch 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 is 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. **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: 47×32mm - Receiver size :37×32mm - Mounting hole size: inner diameter 3.1mm/outer diameter 6mm **Documents**- [Product wiki](https://wiki.dfrobot.com/SKU_TEL0140orTEL0142_Gravity_Digital_Wireless_Switch) - [Transmit Switch Schematic](https://core-electronics.com.au/attachments/localcontent/343d58740d9aafcaf2ad42e83b3bbaa0_55866e2e72e.pdf) - [Transmit Switch Dimensions](https://core-electronics.com.au/attachments/localcontent/1af09957f25f1cd322fa140f740fae72_820384e19b0.pdf) - [Receive Switch Schematic](https://core-electronics.com.au/attachments/localcontent/52d903c257c0cb76aa3cda480b619b2a_56582b5ca1f.pdf) - [Receive Switch Dimensions](https://core-electronics.com.au/attachments/localcontent/adb9fdec321dac91df2862ce83fda971_7097368dcf8.pdf) **Parts List**- Gravity: Digital Wireless Transmit Switch x1 - Gravity: Digital Wireless Receive Switch x1 - Gravity: Digital Sensor Cable x2 ## Images - [Product image 1](https://core-electronics.com.au/media/catalog/product/i/m/image_3602.jpg)