> **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

# Self-powered Wireless Switch (433Mhz)

**Type:** Product page · **SKU:** TEL0146 · **Brand:** [DFRobot](https://core-electronics.com.au/brands/dfrobot-australia)
**Page:** https://core-electronics.com.au/self-powered-wireless-switch-433mhz-1.html ([markdown](https://core-electronics.com.au/self-powered-wireless-switch-433mhz-1.html.md))

This self-powered wireless switch from DFRobot can send signals wirelessly without installing a battery. It is suitable for making wireless doorbells,...

## Pricing

- **Price:** $15.25 (inc GST) — $13.86 AUD, exc GST
- **Quantity discounts:** 6+ $13.17 (exc GST) · 12+ $12.62 (exc GST)

## Availability & dispatch

- Available with a lead time — expect dispatch between Aug 19 and Aug 24.

## How to buy

- **Build a cart:** compose `https://core-electronics.com.au/cart/link?items=TEL0146:1` (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/TEL0146:1.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

In life, remote controllers can be seen everywhere, and most of them are inseparable from the battery. However, we often encounter problems when using the battery, for instance, it is troublesome to replace the battery, batteries are easy to corrode in a humid environment, or the waste batteries may cause serious environmental pollution. Do you know that wireless remote control can actually work without batteries!

**This self-powered wireless switch from DFRobot can send signals wirelessly without installing a battery. The switch is composed of a micro-generator and a 433Mhz radio frequency circuit.** Based on the principle of electromagnetic induction, the micro generator converts the kinetic energy of the press into electrical energy that will be rectified and stored by the RF circuit later, by which a signal can be transmitted wirelessly. It is suitable as a maintenance-free switch for long-term monitoring of changes in the state of pressing, collision, etc., such as making wireless doorbells, pagers, food ordering devices, wall switches, etc.

*Note: Arduino and receiver board not included*

A receiver is required when using this product. It is recommended to use it with our official Gravity: Digital Wireless Switch Receiver (433MHz), or other receivers that support EV1527 decoding format and 10Kbps decoding rate.

**![Self-powered Wireless Switch (433Mhz)](https://core-electronics.com.au/attachments/localcontent/Connection_50276ca43b3.png)**

## Features

- No battery needed, maintenance-free
- Wireless signal, wiring-free
- RF signal, strong penetration
- Onboard 4-position DIP switch, adjustable 15 states
- 1 million sets of random address codes
- The lifetime of 100,000 presses
 
## Applications

- Wireless doorbells
- Pagers
- Food ordering devices
- Wall switches
 
## Specification

- Working Frequency: 433Mhz
- Transmission Rate: 10kbps
- Encoding Format: EV1527
- Output Power: 13dBm
- Modulation Method: OOK
- Power Generation Energy: 600uJ
- Module Size: 47x25x11mm(L\*W\*H)/1.85x0.98x0.43”
- Press Down Force: Typical 1800g
- Action Method: Automatically rebound after pressing down
- Action Distance: 2.6mm (endpoint)
- Press Frequency: no more than 4 times per second, continuously rapid press will cause energy accumulation that cannot be consumed in time, and eventually burn the chip
- Stable Transmission Distance: Indoor 40M
- Distance Test Condition: Straighten the wire antenna of the transmitting module, and for the receiving module, use \[Gravity: Digital wireless switch receiver(433MHz)\]
 
## Documents

- [Product wiki](https://wiki.dfrobot.com/SKU_TEL0146_Self-Powered_Wireless_Switch_433Mhz)
- [Schematic](https://core-electronics.com.au/attachments/localcontent/985c65885707af1633e3771f4460e0af.pdf)
- [PCB Dimensions](https://core-electronics.com.au/attachments/localcontent/dee5331b715fe6db94fce443764d7336_487837cf462.pdf)
- [Module Dimensions](https://core-electronics.com.au/attachments/localcontent/dc6ed23243e3a12dfd8e99172454ed80_210050323dc.pdf)
 
##  Shipping List

- Self-powered Wireless Switch x1

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/T/E/TEL0146-1.jpg)