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Keanley KL-3500 Data Logger

Updated:2025-03-13

Brand: Keanley
Model: KL-3500
Description: The KL-3500 is specifically designed for SDI-12 protocol and DDI mode sensors, as well as RS485, RS232, analog, and pulse sensors. The data logger features 12 connection ports (6 sensor ports, 2 power
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Product Details

Product Description for Keanley KL-3500 Data Logger:：

User Manual

The KL-3500 is specifically designed for SDI-12 protocol and DDI mode sensors, as well as RS485, RS232, analog, and pulse sensors. The data logger features 12 connection ports (6 sensor ports, 2 powered 485 ports, 2 powered 232 ports, 1 barometric pressure/temperature port, and 1 Beidou data port). Please refer to the port descriptions in the software interface for details. It includes one 2P 3.81mm terminal block power supply port, one TYPE-C port (for both power and communication), one power button, and five status indicator lights (LED1 for Beidou status, LED2 for 4G status, LED3 for operational status, LED4 for Bluetooth status, LED5 for charging status). There are two antenna connectors (for 4G communication and Beidou). The upper section houses a battery compartment for 6 AA Ni-MH or alkaline batteries.

Port Indicator Description

Labeling Diagram

Device Connection Diagram

Connection Diagram (A) Placeholder

Connection Diagram (B) Placeholder

Product Specifications

Sensor Logging Interval	5 minutes to 12 hours (average or cumulative of 1-minute sensor readings)
Sensor Reporting Interval	Upload interval to the cloud is configurable
Timekeeping	Automatic and on-demand synchronization via GPS, 4G network data
Computer Communication	Standard USB cable, USB A to Micro USB B
Internet Data Download	SSL/TLS encryption
4G Communication	4G Specs: 4G LTE-M and NB-IoT cellular networks
Mobile Communication	Bluetooth: 5.2, supports Bluetooth Low Energy protocol
GPS Communication	Type: Integrated 56-channel GPS/QZSS receiver Update: Automatic daily and on-demand manual Accuracy: ±3 meters with a clear sky view
Dimensions	154.6mm(L)×W109mm(W)×45mm(H)
Enclosure Material	Impact-resistant alloy sheet metal
Enclosure Power Port	1 (2P 3.81mm terminal block)
Enclosure Ports	3.5mm 3-conductor earphone jack / 3.81mm pitch 4P socket
Sensor Input Ports	SDI-12, analog, and digital (switch) sensors
Sensor Port Type	3.5mm stereo plug connector
RS485 Input Ports	2 (4P powered 3.81mm terminal block)
RS232 Input Ports	2 (4P powered 3.81mm terminal block)
Memory Type	Non-volatile Flash, retains all data after power loss
Data Storage	128MB (40,000 to 80,000+ records, depending on configuration)
Battery Capacity	6 AA Ni-MH or alkaline batteries
Battery Life	Alkaline: 3-12 months, depending on configuration Ni-MH: Over 3 years with USB recharging
Operating Temperature Range	-40°C to 60°C