Specifications:

Input connections    
2 voltage channels
2 temperatures or 2 additional SM150T Sensors 
2 counters (33 kHz & 50 Hz)
1 WET Sensor Control outputs: 1 relay (1 A)
Readings stored: 600,000
Recording rate: 1 second to 24 hours
Configuration: DeltaLINK
Communication options: RS232 USB [1] or modem
Sensor excitation : 1 switched logger power, 15 V precision reference
Power: 9 V 6LR61 (PP3) alkaline or external power 11-24 V
Battery life (dependent on usage) >76k readings
lasting >130 days
Enclosure rating: IP67
Temperature range: -20 to +60°C
Display Size:  140 x 10  5 x 45 mm
General data logging
Controlling irrigation

Sensor compatibility (maximum number of sensors that could be connected [2] ML3    ? (2) with temp ? (4) excl. temp SM150T    ? (2   with temp ? (4) excl. temp 
PR2    PR2 SDI-12  WET Sensor    ?(1) EQ3    ?(2 as mV only) Temperature    ?(2) Tensiometers (bridge sensors)    ?(2) each requires GP-PBA-X50 Counters or Events    ?(2) 1 fast 1 slow Relay Output    ?(1)

With USB to RS232 Adapter Cable type USB-RS232
With appropriate expansion cards and power supply arrangements
 

Accessories
Main components and software
Upgrade of GP1 Data Logger with substrate calibrations for selected horticultural media
Upgrade of GP1 Data Logger with substrate calibrations for selected horticultural media
GP1 Precision Bridge Adapter. Provides precision +3V reference for bridge sensor excitation. Accepts signals up to +/- 29mV. Enables GP1 to log tensiometers on CH1 and CH2. Maximum of 2 x GP-PBA-X50 boards per GP1.
Mountings and enclosures
Universal mounting plate for GP2, GP1 or DL6 logger. Comprises 320mm x 190mm stainless steel plate and fittings for mounting onto 2 inch (51mm) tube or flat surface.
Cables and networks
100cm cable. Connects 9-pin RS232 to USB
For RS232 connection to GP1 Data Logger. 9-way to M8 5-pole (f). Supplied as standard with GP1.
Remote communications
3G-DLC-BX1/SP – 3G/2G Modem Gateway Box with Solar Power and Smart SIM
Solar-powered 3G/2G Modem Gateway box with battery and Smart SIM. For use with GP2, GP1 and DL6 Loggers.
Includes 3G/2G quad band modem with 30 W solar panel, solar regulator, Smart SIM, 10 Ah sealed lead acid battery, and 1 m comms and power extension cable.
Supplied with mounting bracket for solar panel and mounting kit for fixing modem box to tubular masts or poles (42- 51 mm diameter).
Includes antenna with mounting bracket/ground plane and 5 m coaxial cable.
Power options
12V 10Ah sealed lead acid battery with spade terminals. Supplied as standard with GSM-BX1/IB and GSM-BX1/SP Modem Boxes
Combined 1m RS232 and external power extension cable for GP1.
5-core comms cable terminating in M8 male and female connectors, with 1m 2-core mains cable.
Enables PC serial comms with logger, without interrupting external power supply. Suitable for use with external 12V battery or with GP2-PSU Mains Power Supply.
Input: 100 – 240V AC 50 – 50 Hz. Output: 2.5 A, 12 V via screw terminals. Must be protected from weather.
Suitable for powering GP2 directly, or via GP2-NPC Network Power Cable.
Requires correct IEC mains lead, type PC-UK, PC-EU, PC-US, PC-IN or PC-CN.
GP1-RSP-M8 cable