DJI O4 Relay Setup Guide: Charging, Antennas, Power-On & Extension Rod Installation (Canada)

4 de outubro de 2026

🇨🇦 CANADA — DJI O4 Relay Setup: Charging, Antennas, Power-On & Extension Rod for Canadian Orchards & Rolling Fields

🇺🇸 Reading from the United States? See the U.S. edition: DJI O4 Relay Setup Guide: Charging, Antennas, Power-On & Extension Rod Installation

This Canadian edition is written for Canadian DJI Agras operators in the orchards and vineyards of the Okanagan, Niagara and Quebec’s fruit belt. It is the first-use guide to the O4 Relay: charging, antenna installation, power-on and mount or extension-rod setup. The procedure, specifications and warnings below are identical to the original edition linked above — the hardware does not change at the border. What changes for a Canadian operator is the regulatory and purchasing context: the aircraft this DJI O4 Relay supports falls into Transport Canada’s medium RPAS class (25–150 kg) and flies on an Advanced Operations pilot certificate under the November 2025 rules, with a Special Flight Operations Certificate for anything outside that envelope, and pricing is shown in Canadian dollars. Ares Acres stocks the O4 Relay signal repeater system and replacement antennas referenced in this guide as genuine DJI Agras OEM parts, ships them to Canada with free standard shipping, and shows CAD pricing at checkout.

The DJI O4 Relay User Guide v1.0 presents first use as a four-step visual sequence: charge the relay, mount the antennas, power it on, then install the mount and an extension rod. This article expands those illustrations into a field-ready setup checklist while preserving the manufacturer's sequence.

Quick Answer: Charge the relay with a USB Power Delivery charger, install both antennas, power the relay on by pressing the power button and then pressing and holding it, and install the mount plus an extension rod. DJI notes that the extension rod is not included.

DJI O4 Relay complete setup illustration from user guide — Manufacturer setup sequence from DJI O4 Relay User Guide v1.0.

1. Charge the relay

DJI O4 Relay charging diagram using USB Power Delivery charger — The manual recommends a USB Power Delivery charger.

DJI recommends using a USB Power Delivery charger. After field use, do not immediately recharge a hot internal battery; allow it to cool to near room temperature first. The dedicated battery-care article below covers the specified charging temperature range.

2. Mount the antennas

DJI O4 Relay antenna installation diagram — Install the relay antennas before field operation.

The relay should be used with its antennas installed and unobstructed. If an antenna pair is damaged or missing, the verified replacement path is the DJI Agras T100 OEM O4 Relay Antenna (Pair).

3. Power the relay on

DJI O4 Relay power button press then press and hold sequence — Power on/off: press, then press and hold.

DJI uses the same two-stage button behaviour for power on/off: press once, then press and hold.

4. Install the mount and extension rod

DJI O4 Relay mount and extension rod installation with elevated signal path — The extension rod is not included. Field height becomes part of signal performance.

Install the mount and your extension rod as illustrated. The separate field-placement guide explains DJI's recommendation to position the relay at least 2 m higher than the crops.

The complete hardware is available as the DJI Agras T100 OEM O4 Relay Signal Repeater System (USA Version).

Parts & Equipment Referenced in This Guide

Every part listed above is stocked by Ares Acres as a genuine DJI Agras OEM component, ships to Canada with free standard shipping, and shows CAD pricing at checkout for Canadian customers.

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Canadian Operator FAQ: O4 Relay Setup Guide

Does Ares Acres ship the O4 Relay signal repeater system and replacement antennas to Canada?

Yes. Ares Acres ships genuine DJI Agras OEM parts, including the O4 Relay signal repeater system and replacement antennas referenced in this guide, to Canada with free standard shipping, and Canadian customers see CAD pricing at checkout.

Do I need an SFOC to use the DJI O4 Relay with my DJI Agras in Canada?

The DJI O4 Relay itself needs no aviation authorization. The DJI Agras aircraft it supports falls into Transport Canada’s medium RPAS class (25–150 kg) under the November 2025 rules and is flown within visual line of sight on an Advanced Operations pilot certificate; a Special Flight Operations Certificate is still required for operations outside that envelope, such as beyond visual line of sight or payloads Transport Canada treats as dangerous goods. Confirm current requirements with Transport Canada and your provincial regulator before operating.

Is this O4 Relay setup different for Canadian operators?

No. The O4 Relay setup described here is identical in every country; only the regulatory framework, the purchasing path and the units used in this guide differ. Confirm current requirements with Transport Canada and your provincial regulator before operating.