$8.00

N542AS High-Power RF Module | Si4463-Based | +33dBm | 169/433/868/915MHz

Detail

Parameters

N542AS High‑Power, Long‑Range Sub‑1 GHz Wireless Module

Based on Silicon Labs Si4463 | Up to +33 dBm Output | 8 km Range

1. Product Overview

The N542AS is a high‑performance, long‑range wireless module designed for demanding IoT applications where distance and link reliability are critical. Integrating the robust Silicon Labs Si4463 transceiver with an external high‑power amplifier, it delivers an exceptional +33 dBm output power, enabling reliable communication over distances up to 8 kilometres line‑of‑sight.

Supporting key Sub‑1 GHz ISM bands (169, 433, 868, 915 MHz), it combines extreme range with the ultra‑low sleep current of the Si4463 (only 0.1 µA), making it ideal for battery‑operated, wide‑area sensor networks and telemetry systems.

2. Key Features & Benefits

Feature	Benefit
+33 dBm high‑power output	Maximises range and penetration in challenging environments
8 km ultra‑long range	Far surpasses standard modules, enabling wide‑area deployment
Multi‑band global support	Available in 169, 433, 868, and 915 MHz variants for EU, USA, China, and more
‑123 dBm high sensitivity	Ensures stable links even at low data rates
0.1 µA sleep current	Extends battery life for years in duty‑cycled applications
Full development control	All Si4463 pins accessible via SPI for complete hardware/firmware customisation
Wide temperature range	‑40°C to +85°C for industrial and outdoor use

3. Typical Applications

Industrial IoT & SCADA – Long‑range monitoring and control in oil & gas, utilities, and manufacturing
Smart Agriculture & Environmental Sensing – Wide‑area soil monitoring, weather stations, forest protection
Advanced Metering Infrastructure (AMI) – Remote collection for water/gas/electricity meters in sparse areas
Urban Infrastructure & Security – City‑wide sensor networks for lighting, waste management, perimeter security
Telemetry & Remote Control – Drone command links, remote actuator control, scientific data acquisition

4. Technical Specifications

4.1 RF & Performance

Parameter	Specification	Notes
Frequency Bands	169, 433, 868, 915 MHz	Model dependent
Max. Output Power	+33 dBm	—
Receiver Sensitivity	‑123 dBm	@ 1.2 kbps
Modulation	(G)FSK, OOK	Programmable via Si4463
Data Symbol Rate	0.3 – 500 kbps	—
Typical Range	8000 m	Line‑of‑sight, ideal conditions
Antenna Interface	RF pad & IPEX connector	50 Ω impedance

4.2 Electrical & Physical

Parameter	Specification
Supply Voltage	5.0 V (required for PA)
Tx Current (Peak)	~1200 mA @ +33 dBm
Rx Current	18 mA
Sleep Current	0.1 µA
Operating Temperature	‑40°C to +85°C
Module Dimensions	36.0 × 24.0 × 3.0 mm
Host Interface	SPI (full control of Si4463)
Package	Surface Mount (SMD)

5. Product Line Positioning & Selection Guide

The N542AS sits at the top of our performance‑centric series, offering the best balance of power, range, and system complexity.

Feature	N540AS	N541AS	N542AS (This Product)
Core IC	Si4463	Si4463 + PA	Si4463 + High‑Power PA
Output Power	+20 dBm	+27 dBm	+33 dBm (2W)
Key Value	Size & power optimised	Best range/power balance	Maximum power & range
Ideal For	Compact, battery‑critical devices	Extended‑range telemetry, wide‑area networks	Extreme‑range, fixed‑installation backhaul
Next Step	View N540AS →	Explore N541AS →	⤓ Download N542AS Datasheet

6. Why Choose the N542AS?

The N542AS is the pragmatic choice for engineers who need more range than a basic module can provide, but want to avoid the complexity, cost, and higher power consumption of a full 2‑watt solution. It effectively solves the problem of covering large farms, industrial campuses, or suburban networks, offering a significant range boost over +20 dBm modules while remaining easier to integrate and power than its +33 dBm counterpart.

7. Ordering Information

Ordering Code	Core IC	Target Frequency Band	Output Power
N542AS‑169M	Si4463 + PA	160 – 175 MHz	+33 dBm
N542AS‑433M	Si4463 + PA	410 – 480 MHz	+33 dBm
N542AS‑868M	Si4463 + PA	860 – 880 MHz	+33 dBm
N542AS‑915M	Si4463 + PA	902 – 928 MHz	+33 dBm