The CR300 is a multi-purpose, compact measurement and control datalogger. This small, low-cost, high-value datalogger offers fast communications, low power requirements, built-in USB, and excellent analog input accuracy and resolution. The CR300 can measure most hydrological, meteorological, environmental, and industrial sensors. It concentrates data, makes it available over varied networks, and delivers it using your preferred protocol. It also performs automated on-site or remote decision making for control and M2M communications. The CR300 is ideal for small applications requiring long-term remote monitoring and control.
The CR300 series includes Wi-Fi, cellular, or the following radio options for different regions:
CR300-RF407: US and Canada
CR300-RF412: Australia and New Zealand
Benefits and Features
Connects directly to a computer's USB port
Differentiates even slight changes in data values with higher resolutions measurements (24 bit Adc)
Provides simple serial sensor integration and measurement with SDI-12 and/or RS-232
Supports full PakBus networking
Includes embedded web page for direct connection via web browser
The CR300 is a low-powered datalogger designed to measure sensors, analyze data, and store data and programs. A battery-backed clock assures accurate timekeeping. The on-board, BASIC-like programming language—common to all Campbell Scientific dataloggers—supports data processing and analysis routines.
The CR300 wiring panel includes a switchable 12 V terminal, and analog grounds dispersed among six analog terminals.
Operating Temperature Range
-40° to +70°C (standard)
6 single-ended or 3 differential (individually configured)
8 (P_SW, P_LL, C1, C2, and SE1 to SE4)
Voltage Excitation Terminals
2 (VX1, VX2)
Switched 12 Volt
7 terminals (C1, C2, P_SW, and SE1 to SE4) configurable for digital input and output. Includes status high/low, pulse width modulation, external interrupt, and communication functions.
-100 mV to +2500 mV
Analog Voltage Accuracy
Accuracy specifications do not include sensor or measurement noise.
±(0.04% of measurement + offset) at 0° to 40°C
±(0.1% of measurement + offset) at -40° to +70°C
10 to 18 Vdc; 16 to 32 Vdc
Real-Time Clock Accuracy
±1 min. per month
Ethernet, PPP, RNDIS, ICMP/Ping, Auto-IP(APIPA), IPv4, IPv6, UDP, TCP, TLS, DNS, DHCP, SLAAC, NTP, Telnet, HTTP(S), FTP(S), SMTP/TLS, POP3/TLS
PakBus, Modbus, DNP3, SDI-12, TCP, UDP, and others
3 years (against defects in materials and workmanship)
80 MB serial flash
30 MB serial flash
Idle Current Drain, Average
1.5 mA (@ 12 Vdc)
Active Current Drain, Average
5 mA (@ 12 Vdc for 1 Hz scan with 1 analog measurement)
23 mA (@ 12 Vdc with processor always on)
13.97 x 7.62 x 4.56 cm (5.5 x 3.0 x 1.8 in.)
Additional clearance required for cables and leads.
242 to 249.5 g (0.53 to 0.55 lb) depending on communication option selected
Frequency Hopping Spread Spectrum (FHSS)
5 to 250 mW (user-selectable)
905/920 MHz (Brazil)
RF Data Rate
RPSMA (External antenna required;
Client or Access Point
2.4 GHz, 20 MHz bandwidth
Reverse Polarity SMA (RPSMA)
pn 16005 unity gain (0 dBd), 1/2 wave whip, omnidirectional with articulating knuckle joint for vertical or horizontal orientation
7 to 18 dBm (5 to 63 mW)
The CR300-CELL200 option is not compatible with a Verizon cellular network.
2G Frequency Bands
850, 900, 1800, and 1900 MHz
3G Frequency Bands
800, 850, 900, 1900, and 2100 MHz
SMA (External antenna required;
Industry standard 3FF micro-SIM