KC21IP65 RS-485 collector

Bring distributed wired devices onto one network.

A protected wall-mounted enclosure with battery or external-power versions. EdgeBus handles protocols and data for distributed RS-485 devices.

Physical interface: RS-485
Power options: 10800 mAh battery / DC 5–24 V
Mounting: Wall mount
Ingress protection: IP65

01 / SPECIFICATIONS

Check every specification that matters.

Start with interfaces, power and installation conditions.

Read the full technical manual

KC21 — Specifications
Physical interface	RS-485
Power options	10800 mAh battery / DC 5–24 V
Mounting	Wall mount
Ingress protection	IP65
Flying leads	VCC、GND、485A、485B
Programmability	EdgeBus
Operating temperature	−40～85 ℃
Dimensions	120 × 72 × 28 mm

Source: KC21 Official manual · Reviewed 2026-09-25. Confirm options, regional frequency bands and full model codes before ordering.

02 / CONNECTION

Match the interface.
Then connect the equipment.

Match physical interfaces and application protocols separately.

Bus signals

Connect 485A and 485B to the RS-485 device; protocol and communication settings must match.

VCC / GND

On the battery version, these connections supply external equipment; on the DC version, they power KC21. Do not interchange the wiring.

For terminal positions, wire assignments and installation, follow the official wiring instructions .

03 / CONFIGURATION

Choose a configuration
that fits your site.

01Battery and continuous-DC models are different versions; interfaces and power direction vary.

02Assess device count and power load against the sampling interval and site conditions.

Visit the official store Ask about KC21 ↗

The store and manuals open in a new tab. Available configurations are subject to confirmed order details.

THE NEXT CONNECTION / APPLICATIONS START HERE

Once your devices are connected,
let ThinkLink take it from there.

A general-purpose, AI-powered IoT platform with native LoRaWAN.
LoRaWAN / 4G connectivity, AI operations and micro-app development. Free self-hosting, one-command installation and customizable branding.

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