NL241 Wireless Network Link Interface
Low-Power Wireless Networking Peripheral
Provides Wi-Fi connectivity to our dataloggers and peripheral devices
weather applications supported water applications supported energy applications supported gas flux & turbulence applications supported infrastructure applications supported soil applications supported


The NL241 provides Wi-Fi connectivity to dataloggers and peripheral devices over standard 802.11b/g/n networks. 

The NL241 is a wide-operating-temperature and low-power-consumption device, making it ideal for providing Wi-Fi client and access point functionality in demanding and remote applications. The wireless access point feature allows any Wi-Fi device to connect, including your PC, phone, tablet, or even another NL241 or NL240. It can be always on, cycled on an off under program control, or brought up with the touch of a button. Unlike the NL240, the NL241 is a true access point and does not rely on ad hoc networking.

This wireless network link interface is configurable to support a number of different types of connections including PakBus, TCP serial server and client, Modbus/TCP gateway, and Wi-Fi to CS I/O port bridging.

Benefits and Features

  • Wi-Fi access point for onsite connectivity
  • Mode button for easily turning access point on and off
  • Wi-Fi client allowing connectivity to existing networks
  • Low power consumption
  • IP communication with LoggerLink smartphone app and LoggerNet PC software


NL241 glam view
NL241 glam view
NL241 glam view
NL241 front angle view
NL241 front angle view
NL241 front view
NL241 front view
NL241 front view
NL241 front angle view
NL241 front angle view
NL241 back view
NL241 left view
NL241 right view
NL241 top view
NL241 bottom view


Material Aluminium case with black anodized finish
Operating Temperature Range -40° to +70°C
Dimensions 16 x 7.3 x 2.54 cm (6.3 x 2.9 x 1 in)
Weight 180.35 g (6.36 oz)
Configuration Device Configuration Utility over USB or Wi-Fi Telnet console over Wi-Fi; Terminal menu over RS-232
CS I/O Port SDC 7, 8, 10 or 11 (does not support ME); 9600 to 460.8 k bps
RS-232 Port DTE, DB9 Male; 1200 to115.2 bps
USB Port Micro-B
Supported Protocols IPv4, IPv6, ICMP/Ping, ICMPv6/Ping, TCP/IP, DHCP Client, DHCP Server (in access point mode only), SLAAC, DNS Client, HTTPS Proxy, TLS, Telnet Server, PakBus©, Modbus.
TCP Connections 50 simultaneous connections supported; 10 of the 50 TCP connections can be used for TLS
PakBus Router 50 routes supported
Modbus Server Up to 15 concurrent transactions supported


Antenna Connector RPSMA
Supported Technologies 802.11 b/g/n, WPA/WPA2-Personal, WP/WPA2-Enterprise Security WEP Client Mode: WPA/WPA2-Personal and Enterprise WEP Access Point Mode: WPA2-Personal
Communication Rate 802.11b: up to 11 Mbps 802.11g: up to 54 Mbps 802.11n: up to 72 Mbps
Transmit Power 7 to 18 dBm (5 to 63 mW)
Rx Sensitivity -97 dBm
Frequency 2.4 GHz


CS I/O or DC Barrel Connector (not USB)
Supply Voltage 9 to 16 Vdc
Power Consumption Client Mode: 7.5 to 8 mA idle 65 to 75 mA communicating Access Point Mode: 67 mA idle, 70 mA communicating Standby: less than 1.5 mA

Compliance information

CE Compliant
Complies with the limits for a Class B digital device pursuant to part 15 of the FCC Rules.
Embedded Radio Transmitter Approvals FCC Identifier: XF6-RS9113SB Industry Canada: 8407A-RS9113SB
View EU Declaration of Conformity documentation at


Bridging of Wi-Fi to CS I/O (also known as CS I/O IP or bridge mode) is only available over a CS I/O connection. Bridge mode only works with dataloggers that have a CS I/O port such as the CR800, CR1000, CR3000, CR6, and CR1000X.

The NL241 is compatible with the following: 

  • Device Configuration Utility (version 2.15 or greater)
  • CR800, CR1000, or CR3000 datalogger OS (version 31.08 or greater)
  • CR6 datalogger OS (version 06.08 or greater)

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