Accsense A1-01a

  • Receive alarms via email, cell phone, pager, or landline. Send alarms to multiple locations!
  • Power / internet outage notifications
  • Internal temperature, humidity, light and vibration sensors
  • External 4-20mA and 0-5V inputs
  • 2 Digital inputs
  • Battery or AC power
  • Up to 250′ range
  • 250 Sample data buffer

Call for configuration and price. 1-800-956-4437

Additional Equipment Required

  • Accsense B1-06 - $ | Add to cart
  • 1-Year Monitoring Subscription Renewal Plan – Per Pod - $119 | Add to cart
  • Private: 3-Year Monitoring Subscription Renewal Plan – Per Pod - $329 | Add to cart


A1-01a Wireless Environmental Data Logger

The Accsense A1-01a wireless environmental data logger is designed for general environmental measurements. It provides several different internal sensors, as well as a screw terminal connector for connecting to a wide range of external analog sensors. The pod also includes a +5Vdc output to power external sensors.

In the event no gateway can be reached, individual pods will store data until a connection is restored. The stored data will be transferred to the online account. Pods have a range of approx. 80m (250ft), and can also act as a repeater for other’s signals.

Package includes:

  • A1-01 Pod
  • Pin-out Guide
  • AC Adapter
  • Standard Antenna
  • Wall Mounting Bracket
  • Batteries (3xAA)

Internal sensors:

  • Ambient Temperature
  • Vibration
  • Humidity
  • Acoustic Level
  • Ambient Light

External Sensor Inputs:

  • 4-20mA Current Input with +20Vdc Loop
  • Digital Input (Contact Closure)
  • Counter
  • 0-5Vdc Analog Input with +5Vdc Sensor Drive



Internal Sensors

Ambient Temperature Sensor
Temperature Range -40°C to +70°C
Typical Accuracy at 25°C ±0.3°C
Typical Accuracy over Full range ±1.4% full Span
Measurement Resolution :0.01°C
Vibration (Relative figures, Uncalibrated)
Number of Axis (averaged together) 3
Maximum Acceleration, each axis ±2G
Offset and Sensitivity Error ±10%
Measurement Resolution 0.006G
Relative Humidity
Humidity Range 5% to 95%rh
Humidity Accuracy at 25°C ±2%rh
Humidity Accuracy over Full Range ±3%rh
Measurement Resolution 0.03%rh
Acoustic Level (Relative figures, Uncalibrated)
Range 0% to 100%
Resolution 0.1%
Visible Light (Relative figures, Uncalibrated)
Range (logarithmic) 0-64000 Lux
Resolution 200 pts/Decade

External Inputs

Analog Voltage Input with 5Vdc Output
Voltage Range 0 to 5Vdc
Typical Accuracy ±0.28% full scale
Measurement Resolution 4.883 mV
Input Impedance >1 M?
Source Accuracy ±4%
Settling Time 64 mSec
Analog Current Input
Current Range 0 to 20mA
Resolution 0.020345mA
Typical Accuracy ±0.29% full scale
Loop Supply >+20Vdc, ±0.6Vdc
Settling Time 200mSec
Digital Input 1 (Pulse Counter/Contact Closure/Timer)
Zero Input Voltage 0 to 0.5Vdc (or Shorted Input)
High Input Voltage 2.4 to 10Vdc (or Open Circuit)
Count Range 216
Maximum Frequency >2500Hz counting; 40Hz Interval
Minimum Pulse Width 25mSec
Timer Range 24 Hrs
Timer Resolution 1mSec
Digital Input 2 (Pulse Counter/Contact Closure)
Zero Input Voltage 0 to 0.5Vdc (or Shorted Input)
High Input Voltage 2.4 to 10Vdc (or Open Circuit)
Count Range 232
Maximum Frequency 2500Hz
Minimum Pulse Width 200µSec

General Specifications

Physical Size
Dimensions 3.5 in x 3.25 in x 2in. (89mm x 83mm x 51mm)
Weight 8 oz. (227g)
Sampling Rate User Settable 30sec – 24hrs
Emergency Data Storage 250 Samples per Sensor
Power Options
Option #1 100-240Vac 50-60Hz
Option #2 DC Input 4-7Vdc
Option #3 3 x AA Batteries (6 month life at 5 minute sampling intervals)
Range 250ft Outdoors, 90ft Indoors
Topology Mesh
Standard IEEE 802.15.4
Frequency 2.4GHz DSS
Power Output -0.79dBm
Operating Environment
Operation temperature when using Lithium batteries -40°C to 70°C, 5-95%rh
Operation temperature when using Alkaline batteries -20°C to 50°C, 5-95%rh

Online Monitoring

Real-time Monitoring & Alarming

Accsense Online Monitoring Software
All of the measurements acquired using the Accsense Solution are immediately available on your secure Accsense Account, online. Each pod requires an online account subscription. Updated in real-time, you can plot measurement history, analyze tabular data, and set alarms to watch your data and provide email, pager, or cell phone alerts. Alarms are also sent for power or internet outage.


  • Simple to use, virtually no learning curve
  • Web based, no software installation or firewall configuration hassles
  • Customizable interface with dashboard of most recent measurements from all sensor pods
  • Instant access to charts depicting measurement history, with ranges as narrow as 5 minutes or as wide as 90 days.
  • Manual vertical scaling allows for consistency across multiple graphs and samples.
  • Receive alarms via email, cell phone, pager, or landline. Send alarms to multiple locations!
  • Power / internet outage notifications
  • View tabular measurement data online
  • Download measurement data for offline analysis
  • Allow password-protected, limited access to certain users
  • Completely secure and backed up
  • FREE software/feature upgrades!

Service includes all features below. You can select length of your subscription, from 1 or 3 years.


  • Measurement Dashboard
  • View Tabular Measurement Data
  • Secure Data Storage*
  • Tabular Measurement Download
  • Online Measurement History Charting
  • Alarms and Notifications
  • Sequential Alarming
  • Corrective Action
  • Yearly Subscription

*Unlimited Storage: Only the past 365 days of data can be displayed on the online graph.Data is archived after
365 days, and is available to download as a CSV file.


Live Demo

To see how Accsense Monitoring systems work, view our Accsense Monitoring software live demo by clicking here.