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Full machine-readable index: https://core-electronics.com.au/llms.txt # Pololu RC Switch with Medium Low-Side MOSFET **Type:** Product page · **SKU:** POLOLU-2803 · **Brand:** [Pololu](https://core-electronics.com.au/brands/pololu-australia) **Page:** https://core-electronics.com.au/pololu-rc-switch-with-medium-low-side-mosfet.html ([markdown](https://core-electronics.com.au/pololu-rc-switch-with-medium-low-side-mosfet.html.md)) This RC switch converts hobby radio control pulses to digital on/off signals and has an integrated medium, low-side MOSFET that allows it to drive moderate loads (up to around 15 A), such as lighting or small actuators. The activation threshold and direction are configurable, and a safe-start feature reduces the likelihood of unexpected activation. The board also includes a linear regulator that allows it to be powered with voltages between 2.5 V and 16 V. ## Pricing - **Price:** $18.40 (inc GST) — $16.73 AUD, exc GST - **Quantity discounts:** 10+ $16.05 (exc GST) · 25+ $15.55 (exc GST) ## Availability & dispatch - Available with a lead time — expect dispatch between Aug 17 and Aug 18. ## How to buy - **Build a cart:** compose `https://core-electronics.com.au/cart/link?items=POLOLU-2803:1` (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/POLOLU-2803:1.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 | [![](https://core-electronics.com.au/attachments/localcontent/0J4810_24053167466.jpg)](https://core-electronics.com.au/attachments/localcontent/0J4810_10626cbf913.jpg) | |---| | [![](https://core-electronics.com.au/attachments/localcontent/0J4815_197809f035c.jpg)](https://core-electronics.com.au/attachments/localcontent/0J4815_11788cd7acd.png) | |---| | Typical wiring diagram for the Pololu RC Switch with Medium Low-Side MOSFET. | The Pololu RC switch with medium low-side MOSFET can be used with standard hobby radio control systems for radio control switch applications or simple interface applications. Example uses include converting extra RC receiver or servo controller outputs to simple high/low signals that can control LEDs or relays and connecting RC systems to microcontroller projects that do not have the necessary resources for decoding the RC interface. Two outputs indicate the presence of a valid signal and whether the switch is on or off, and an integrated low-side MOSFET turns on when the switch is on, allowing the board to drive moderate loads directly. The switch also features a flyback (or freewheeling) diode across the load outputs so that you can connect a coil to them, such as a motor or relay, without any additional external components. An onboard regulator allows the switch to be powered from voltages between 2.5 V and 16 V. This allows the board to be powered from a 4- or 5-cell NiMH or NiCD battery pack. The battery pack will typically be connected to an RC receiver or [servo controller](https://core-electronics.com.au/category/102/maestro-usb-servo-controllers), which passes the power on to the RC switch. The board’s MOSFET can deliver up to 15 A with VCC at 5 V and can handle load supply voltages up to 30 V. The RC switch measures the width of incoming RC pulses and compares it to a user-configurable threshold (with ±64 µs of hysteresis) to decide whether to turn on the MOSFET. By default, the threshold is approximately 1700 µs, with switch activation occurring above the threshold (longer pulses), but the switch has a learning mode that allows you to change the threshold and the activation direction. A safe-start feature reduces the likelihood of unexpected activation. This compact unit measures 0.6" × 0.825" and weighs just over a gram (0.04 oz) without the included header pins. | \| [![](https://core-electronics.com.au/attachments/localcontent/0J4813_221371e1c98.jpg)](https://core-electronics.com.au/attachments/localcontent/0J4813_298396a2ab3.jpg) \| \|---\| \| Pololu RC Switch with Medium Low-Side MOSFET with included terminal blocks and headers soldered to the component side. \| | \| [![](https://core-electronics.com.au/attachments/localcontent/0J4817_376146b5816.jpg)](https://core-electronics.com.au/attachments/localcontent/0J4817_37980c5c68d.jpg) \| \|---\|---\| \| Pololu RC Switch with Medium Low-Side MOSFET on a breadboard. \| | |---| **Outputs and indicator LED** The RC switch provides feedback about what state it is in via a yellow indicator LED. Status information is also provided on two output pins: - The GOOD pin indicates the presence of a valid RC signal (10–330 Hz pulse rate, 0.5–2.5 ms pulse width). - The OUT pin indicates whether the MOSFET is on. More information about using the Pololu RC switch with medium low-side MOSFET can be found in the user’s guide. **Included hardware** A 12-pin [0.1" straight breakaway male header](https://core-electronics.com.au/0-100-2-54-mm-breakaway-male-header-1x40-pin-straight.html) and two [3.5mm 2-pin terminal blocks](https://core-electronics.com.au/screw-terminal-block-2-pin-3-5-mm-pitch-top-entry-4-pack.html) are included with the Pololu RC switch with medium low-side MOSFET. The header pins can be used to connect the RC switch to perfboards or [breadboards](https://core-electronics.com.au/prototyping/breadboards.html). Please note that the included terminal blocks are only rated for 10 A; for higher power applications, use thick wires soldered directly to the board. | [![](https://core-electronics.com.au/attachments/localcontent/0J4812_30647ff807e.jpg)](https://core-electronics.com.au/attachments/localcontent/0J4812_283385cb50a.jpg) | |---| | Pololu RC Switch with Medium Low-Side MOSFET with included hardware. | **Other RC switches** Pololu offer an [RC switch with a digital output](https://core-electronics.com.au/pololu-rc-switch-with-digital-output.html) for applications that just require a low-current digital signal and an [RC switch with a small MOSFET](https://core-electronics.com.au/pololu-rc-switch-with-small-low-side-mosfet.html) for applications that only need to switch a few amps. Pololu also offer an [RC switch with a relay](https://core-electronics.com.au/pololu-rc-switch-with-relay-assembled.html) that can be used to control electrically isolated loads. This product replaces [item #1211](https://core-electronics.com.au/catalog/product/view/sku/POLOLU-1211). (For most applications, it can be considered a drop-in replacement for #1211.) | [![](https://core-electronics.com.au/attachments/localcontent/0J4902_26320b5ee41.jpg)](https://core-electronics.com.au/attachments/localcontent/0J4902_15506ea1fce.jpg) | |---| | The Pololu RC Switch family of products. | **People often buy this product together with:** | [![Pololu RC Switch with Digital Output](https://core-electronics.com.au/attachments/localcontent/0J4848_4838828194.jpg)](https://core-electronics.com.au/pololu-rc-switch-with-digital-output.html) | [Pololu RC Switch with Digital Output](https://core-electronics.com.au/pololu-rc-switch-with-digital-output.html) | |---|---| | [![Pololu RC Switch with Small Low-Side MOSFET](https://core-electronics.com.au/attachments/localcontent/0J4850_503269fd55.jpg)](https://core-electronics.com.au/pololu-rc-switch-with-small-low-side-mosfet.html) | [Pololu RC Switch with Small Low-Side MOSFET](https://core-electronics.com.au/pololu-rc-switch-with-small-low-side-mosfet.html) | |---|---| | [![Pololu RC Switch with Relay (Assembled)](https://core-electronics.com.au/attachments/localcontent/0J4777_4756cff77b.jpg)](https://core-electronics.com.au/pololu-rc-switch-with-relay-assembled.html) | [Pololu RC Switch with Relay (Assembled)](https://core-electronics.com.au/pololu-rc-switch-with-relay-assembled.html) | |---|---| **Dimensions** | Size: | 0.6" × 0.825" | |---|---| | Weight: | 1.2 g[1](https://core-electronics.com.au/#note1) | **General specifications** | Minimum operating voltage: | 2.5 V | |---|---| | Maximum operating voltage: | 16 V[2](https://core-electronics.com.au/#note2) | | Maximum output current: | 15 A | **Identifying markings** | PCB dev codes: | rcs02d | |---|---| | Other PCB markings: | 0J7589 | **Notes:** 1Without included optional headers and terminal block.2For the RC switch module. The load supply voltage should not exceed 30 V. **Documentation and other information** - ![](https://core-electronics.com.au/attachments/localcontent/0J4901_4696ae2657.jpg)**Pololu RC Switch User’s Guide (Printable PDF)** User’s manual for the Pololu RC Switch with Medium Low-Side MOSFET and the Pololu RC Switch with Relay. **File downloads** - **Pololu RC Switch with Medium Low-Side MOSFET schematic diagram (156k pdf)** Printable schematic diagram of the Pololu RC Switch with Medium Low-Side MOSFET. - **3D model of the Pololu RC Switch with Medium Low-Side MOSFET (4MB step)** - **Drill guide for Pololu RC Switch with Medium Low-Side MOSFET (32k dxf)** This DXF drawing shows the locations of all of the board’s holes. ## Images - [Product image 1](https://core-electronics.com.au/media/catalog/product/p/o/pololu_rc_switch_with_medium_low_side_mosfet__pololu_2803__00.jpg)