# CN105-to-Grove Cable, Assembled and Tested > Ready-made CN105-to-Grove cable (JST PAP-05V-S to Grove HY2.0) for Mitsubishi mini-splits. 20 cm for wall units, 50 cm for ducted. Optional braided sleeving, electrically tested, from $8. Source: https://serin-labs.com/cable.html Last updated: 2026-10-27 ![Assembled CN105-to-Grove cable, coiled, in orange braided sleeving with a 5-pin JST connector on one end and a 4-pin Grove HY2.0 connector on the other](https://serin-labs.com/assets/cn105_cable.jpg) ![Assembled CN105-to-Grove cable, coiled, with its four coloured conductors unsleeved, a 5-pin JST connector on one end and a 4-pin Grove HY2.0 connector on the other](https://serin-labs.com/assets/cn105-cable-standard.jpg) ![The orange CN105-to-Grove cable routed into the electrical box of a Mitsubishi wall unit, running under a retaining clip and beneath the control-board cover](https://serin-labs.com/assets/serin-cn105-cable-installed-wall-unit.webp) ![The orange CN105-to-Grove cable plugged into the CN105 port on a Mitsubishi MVZ-A18AA7 ducted air handler control board](https://serin-labs.com/assets/serin_cn105_mvz_aa7_1.webp) ![The empty red CN105 serial port on a Mitsubishi indoor unit's control board, with the CN105 label and pins 1 and 5 marked in the silkscreen](https://serin-labs.com/assets/mitsubishi-cn105-port-control-board.webp) # CN105-to-Grove Cable $13 CN105 · Grove · 20 / 50 cm [5.0 (9)](https://shop.serin-labs.com/pages/reviews) Connects a Mitsubishi indoor unit's CN105 port to a Grove-equipped ESP32 board. Assembled and tested, with no crimping or soldering. Controller board sold separately. 20 cm, 1 cable in braided sleeving $13 [Buy](https://shop.serin-labs.com/cart/52655415132440:1) Free US shipping $35+ Ships in 1–2 days [30-day returns](https://serin-labs.com/policies.html#fit) Secure checkout by Shopify, shipped from New Jersey. **Shipping** Free US shipping on orders $35 and up, from New Jersey. Orders outside the US ship at the carrier rate shown at checkout; any duties or import fees on delivery are the buyer's. **Returns** 30-day returns by mail. [How returns work](https://serin-labs.com/policies.html#fit). **Warranty** 1-year limited hardware warranty against manufacturing defects. [Warranty terms](https://serin-labs.com/warranty.html). - [CN105-to-Grove Cable, 20 cm, 1 cable: $8](https://shop.serin-labs.com/cart/52441463095576:1) - [CN105-to-Grove Cable, 20 cm, 1 cable in braided sleeving: $13](https://shop.serin-labs.com/cart/52655415132440:1) - [CN105-to-Grove Cable, 20 cm, 4 cables: $30](https://shop.serin-labs.com/cart/52441463128344:1) - [CN105-to-Grove Cable, 20 cm, 4 cables in braided sleeving: $50](https://shop.serin-labs.com/cart/52655415165208:1) - [CN105-to-Grove Cable, 50 cm, 1 cable: $13](https://shop.serin-labs.com/cart/52441463161112:1) - [CN105-to-Grove Cable, 50 cm, 1 cable in braided sleeving: $18](https://shop.serin-labs.com/cart/52655415197976:1) - [CN105-to-Grove Cable, 50 cm, 4 cables: $50](https://shop.serin-labs.com/cart/52441463193880:1) - [CN105-to-Grove Cable, 50 cm, 4 cables in braided sleeving: $70](https://shop.serin-labs.com/cart/52655415230744:1) Which length? · [Wiring reference](https://serin-labs.com/wiring.html) ## Will it fit your unit? Type the model from the indoor unit's sticker. Requires a free CN105 port. Not for Ecodan or units with a wired wall controller on the same port. ## Overview Highlights Cable length ### Choose your length 20 cm: wall units and cassettes Keep the cable and board inside the indoor unit's plastic housing. 50 cm: ducted air handlers Mount the board outside the metal cabinet for better Wi-Fi reception. For SVZ, MVZ, PEAD, and PVA units. ![20 cm CN105 cable routed inside a Mitsubishi wall unit](https://serin-labs.com/assets/serin-cn105-cable-installed-wall-unit.webp) ![50 cm CN105 cable connected to a Mitsubishi MVZ-A18AA7 ducted air handler](https://serin-labs.com/assets/serin_cn105_mvz_aa7_1.webp) ## Technical **HVAC connector** 5-pin JST PAP-05V-S (CN105) **Board connector** 4-pin Grove HY2.0 **Length** 20 cm or 50 cm **Pack size** 1 or 4 cables **Sleeving** Standard or orange PET braid with heat-shrink ends **Wiring** Power and serial data; CN105's 12 V pin is left disconnected **Testing** Power and communication wires tested before shipping **Controller board** Sold separately ### Works with Fits the [Serin Controller](https://serin-labs.com/controller.html), M5Stack Atom S3 Lite, and NanoC6. See the [supported boards](https://serin-labs.com/parts.html) and [firmware installer](https://serin-labs.com/flash.html). Compatible CN105 projects include [MitsubishiCN105ESPHome](https://github.com/echavet/MitsubishiCN105ESPHome), [mUART](https://github.com/muart-group), [mitsubishi2MQTT](https://github.com/gysmo38/mitsubishi2MQTT), and [SwiCago/HeatPump](https://github.com/SwiCago/HeatPump). ### Build it yourself The [wiring reference](https://serin-labs.com/wiring.html) has the pinout, harness drawing, and connector part numbers to make your own cable. ## In the box ![Braided CN105-to-Grove cable](https://serin-labs.com/assets/cn105_cable.jpg) - CN105-to-Grove cable 20 cm, braided 1× per pack Controller board not included. The complete controller ## Controller and cable, assembled The Serin Controller ships with this cable attached and tested, from $35. [See the controller](https://serin-labs.com/controller.html) [Wiring reference](https://serin-labs.com/wiring.html)