CL27: GPRS Data Logger

- Smart Phone, Tablet, PC. Real Time


- 4 Channels Analog Input

- 2 Channels Totalizer

- 3G/4G (HSDPA/LTE) Data Transfer

- Use a standrad SIM. (without having to

  rely on SIM Fix IP.)

- Centralize data logger (Logger on

  common database: MySQL, SQL Server)

- SMS Alarm (Send alarm to define number)

- Two Relay Output Control VIA SMS

            GPRS Data Logger CL27 is data logger for recording Analog and Digital (Totalize). Data will be sending to Server: MySQL, SQL Server (Centralized Data Logging System) (รายละเอียด) via internet by GPRS signal. Can view data simultaneously via Smart Phone, Tablet, PC.

            Analog Input can be choosing as 4-20mA, 0-100 mVdc, 1-5Vdc, 0-5Vdc, 0-10Vd. CL27 will continuously record all the data with stamping of date and time. CL27 can do remote configuration and Monitor. It can set alarm and send SMS to user once alarm has been occurred.

            Totalized Input such as Totalized of Flow meter, Kwh of power usage.

Centralized Data Logging System

            Figure 1 show diagram of Centralized Data Logging System. Centralized Data Logging System is the system that combines ability of server and internet network. All data will be sending to server then data will be spread out using internet network. It is easy to get a data, long distance is not a problem, and everyone will get the same information no matter wherever they are.

CL27 Overview (Video)

Wisserv Utility (Video)


Cellular Interface

Frequency Bands:

FDD LTE: 800/850/900/1800/2100/2600 MHz

TDD LTE: 2300/2500/2600 MHz

WCDMA: 850/900/2100 MHz

GSM: 900/1800 MHz

LTE Version:

3GPP E-UTRA Release 10

Data Transfer (Max.):

4G FDD LTE: 150 Mbps (DL), 50 Mbps (UL)

4G TDD LTE: 130 Mbps (DL), 35 Mbps (UL)

3G DC-HSPA+: 42 Mbps (DL), 5.76 Mbps (UL)

3G UMTS: 384 Kbps (DL), 384 Kbps (UL)

3G TD-SCDMA: 4.2 Mbps (DL), 2.2 Mbps (UL)

2G EDGE: 236.8 Kbps (DL), 236.8 Kbps (UL)

2G GPRS: 85.6 Kbps (DL), 85.6 Kbps (UL)

Output power:

FDD LTE 1800: 3.21 W

TDD LTE 2600: 1.7 W

WCDMA 850: 2.69 W

GPRS 900: 2.1 W

EDGE 900: 1.66 W

SIM Card Holder:

Standard SIM

SIM Interface

Number of SIM:


SIM Control:


USB Interface


USB 1.1/2.0


USB Type B


12 Mbps (Full-Speed USB)



Analog Input

Number of Channel:

4 channels

Input Type:

Current, Voltage

Input Range:

Current (4 to 20mA)

Voltage mVDC (0 to 100 mVDC)

Voltage (0 to 5, 1 to 5, 0 to 10 VDC)

ADC Resolution:

16 Bits


± 0.2 % of span

Digital Input

Number of Channel:

2 Channels

Sensor Type:

NPN open collector or dry contact

I/O Mode:

DI or Even Counter

Dry Contact:

ON : Short to GND

OFF : Open

Counter Frequency:

maximum frequency 20 Hz

Minimum Pulse Width:

50 msec

Relay Output

Number of Channel:

2 Channels (Remote Control)

Relay Type:

N.O. or N.C.

Contact Rating:

6 A @ 250 VAC

6 A @ 30 VDC


Storage Internal:

Flash Memory 8 MByte

Recording Interval:

1 Sec to 18 Hours (Programmable)

Record Mode:

Stop When Full

Recording by:

Interval, Schedule, Appointment

Data Format:

Can be Exported to MS Excel

Data Capacity:

260,000 Records


Uploading Interval:

≥ 1 Minute (Programmable)

Uploading by::

Interval, Schedule

Power Requirements

Power Supply:

12 to 24 VDC

Power Consumption


130 mA @ 12 VDC

Start Record:

300 mA @ 12 VDC

Environmental Limits

Operating Temperature:

0 to 55 °C

Operating Humidity:

5 to 95 %RH

Storage Temperature:

0 to 70 °C

Physical Characteristics


W100 x H123 x D30 mm


Warranty Period:

5 year

Ordering Information: Specify input range
Example CL27/4-20mA

Package Checklist

1. CL27

2. Antenna

3. USB Cable