Complete Enclosed Logger (NLDL-VD104-TH01)

A ready-to-use instrument including the logger PCB, Raspberry Pi, 7-inch touchscreen display, UPS HAT, and durable metal enclosure. The built-in UPS HAT supports two 3,500 mAh 18650 lithium batteries for backup power. Batteries are not included to simplify shipping and avoid lithium battery transport restrictions, allowing users to source and install compatible cells locally.

Complete Enclosed Logger Specifications

Measurement & Logging

Analog Inputs

4 differential voltage input channels

Voltage measurement range: ±0.006 V to ±12 V

12-bit differential analog inputs

Sampling rate: up to 30 kS/s per channel

Adjustable logging interval: 50 ms to 1 min

1 MΩ isolated input architecture to reduce channel-to-channel interference

Digital I/O

Digital inputs: 4

Digital outputs: 4

Logic levels: 12 V or 24 V

Output current: 50 mA per channel

Monitoring & Logging Features

Integrated temperature & humidity sensor

Independent data and error logging

Alarm history for event tracking and diagnostics

Connectivity & Interfaces

• LAN and Wi-Fi connectivity
• VNC remote screen access
• 2 × USB 2.0 ports
• 2 × USB 3.0 ports
• Dual Micro HDMI outputs

Temperature & Humidity

• Temperature accuracy: ±0.54 °F / ±0.3 °C
• Temperature measurement range: –40 °F to +257 °F / –40 °C to +125 °C
• Humidity operating range: 0 to 100 %RH
• Humidity accuracy: ±3 %RH

For applications requiring higher temperature measurement accuracy, the NLDL-VD104-TH01E model will be available as an option after the campaign ends. This version includes an external temperature probe mounted away from the device housing to minimize the influence of internal heat.

Storage & Data Security

• Internal storage options: 64 GB, 128 GB, 256 GB
• External storage support: USB flash drives and external SSDs up to 2 TB

Automatic storage failover: uninterrupted logging during external storage removal, with automatic switching to internal memory if external storage is removed or unavailable

Power System

Integrated UPS HAT

Supports two 3,500 mAh 18650 lithium batteries 

Up to 3 hours of continuous operation, depending on battery quality, system configuration, and connected peripherals

Automatic transition between external power and battery operation

Mechanical Specifications

Durable aluminum enclosure

Dimensions: 8.15 × 4.92 × 2.28 in / 207 × 125 × 58 mm