Table of Contents：

• 1.  Introduction
  • 1.1  What is SAC01L Temperature & Humidity Sensor
  • 1.2  Features
  • 1.3  Specification
  • 1.5  Storage & Operation Temperature
  • 1.6  Applications
• SAC01L_LoRaWAN_Temperature&Humidity_Sensor_User_Manual
• 2. Configure SAC01L to connect to LoRaWAN network
  • 2.1 How it works
  • 2.2  Example to join LoRaWAN network
  • 2.4  Uplink Payload
    • 2.4.1  Uplink FPORT=5, Device Status
    • 2.4.2  Uplink FPORT=2, Real time sensor value
      • BAT:
      • MOD:
      • sysTimeCurrent:
      • OUT
      • INT
    • 2.4.5  Decoder in TTN V3
  • 2.6  Datalog Feature
    • 2.6.1  Unix TimeStamp
    • 2.6.2  Poll sensor value
    • SAC01L_LoRaWAN_Temperature&Humidity_Sensor_User_Manual
  • 2.8  LED Indicator
  • 2.9  Button
• 3.  Configure SAC01L via AT command or LoRaWAN downlink
  • 3.1  Downlink Command Set
  • 3.2  Set Password
• 4.  FAQ
  • 4.2  AT Command and Downlink
  • 4.3  How to upgrade the firmware?
  • 4.4  How to change the LoRa Frequency Bands/Region?
• 5.  Order Info
  • 5.1  Main Device
• 6.  Packing Info
• 7.  Support
• 8.  FCC Warning
• 9. Appendix I:According to the use

1.  Introduction

1.1  What is SAC01L Temperature & Humidity Sensor

1.2  Features

• LoRaWAN v1.0.3 Class A protocol.
• Low power consumption
• AI Image Sensor.
• Send image to IoT server
• Frequency Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915
• Support Interrupt uplink
• Support Bluetooth v5.1 and LoRaWAN remote configure
• Support wireless OTA update firmware
• AT Commands to change parameters
• Uplink on periodically
• Downlink to change configure
• IP Rating: IP52

1.3  Specification

Common DC Characteristics:

• DC power supply 5v
• Operating Temperature: -40 ~ 85°C

Camera:

• Mono: black & white
• Angle: 110°
• Image size：64kb
• Image resolution：640x480
• Power Consumption: 206.1mW
• Supply Voltage: DC5V
• Idel Mode: 6uA
• Take Photo: 41.22 mA and 3171 ms
• Cable Length：150cm
• Dimension：46.2x29x13.8 mm
• Waterproof level：IP52

LoRa Spec:

• Frequency Range,  Band 1 (HF): 862 ~ 1020 Mhz
• Max +22 dBm constant RF output vs.
• RX sensitivity: down to -139 dBm.
• Excellent blocking immunity

1.5  Storage & Operation Temperature

-10 ~ 50 °C  or -40 ~ 60 °C

1.6  Applications

• Smart Buildings & Home Automation
• Logistics and Supply Chain Management
• Smart Metering
• Smart Agriculture
• Smart Cities
• Smart Factory

2. Configure SAC01L to connect to LoRaWAN network

2.1 How it works

The SAC01L is configured as LoRaWAN OTAA Class A mode by default. It has OTAA keys to join LoRaWAN network. To connect a local LoRaWAN network, you need to input the OTAA keys in the LoRaWAN IoT server and press the button to activate the SAC01L. It will automatically join the network via OTAA and start to send the sensor value. The default uplink interval is 20 minutes.

The LED light is at the upper left for a positive viewing angle.When the character crosses the horizontal line in the middle, the count increases by one.

For details, please see the case.

2.2  Example to join LoRaWAN network

This section shows an example for how to join the TheThingsNetwork LoRaWAN IoT server. Usages with other LoRaWAN IoT servers are of similar procedure.

Assume the DLOS8 is already set to connect to TTN V3 network . We need to add the SAC01L device in TTN V3 portal.  

Step 1:  Create a device in TTN V3 with the OTAA keys from SAC01L.

Each SAC01L is shipped with a sticker with the default DEV EUI as below:

Enter these keys in the LoRaWAN Server portal. Below is TTN V3 screen shot:

Add APP EUI in the application.

choose to create the device manually.

Add APP KEY and DEV EUI 

Default mode OTAA

Step 2:  Use ACT button to activate SAC01L and it will auto join to the TTN V3 network. After join success, it will start to upload sensor data to TTN V3 and user can see in the panel.

2.4  Uplink Payload

Uplink payloads include two types: Valid Sensor Value and other status / control command.

• Valid Sensor Value: Use FPORT=2
• Other control command: Use FPORT other than 2.

2.4.1  Uplink FPORT=5, Device Status

Uplink the device configures with FPORT=5. Once SAC01L Joined the network, it will uplink this message to the server. After first uplink, SAC01L will uplink Device Status every 12 hours.

Example Payload (FPort=5):  38 0A 00 01 FF 0C D2

Sensor Model: For SAC01L, this value is 0x38.

Firmware Version: 0x0A00, Means: v1.0.0 version.

Frequency Band:

*0x01: EU868

*0x02: US915

*0x03: IN865

*0x04: AU915

*0x05: KZ865

*0x06: RU864

*0x07: AS923

*0x08: AS923-1

*0x09: AS923-2

*0x0a: AS923-3

Sub-Band: value 0x00 ~ 0x08(only for CN470, AU915,US915. Others are0x00)

BAT: shows the battery voltage for SAC01L.

Ex1: 0x0CD2 = 3282mV

Use can also get the Device Status uplink through the downlink command:

Downlink:  0x2601

2.4.2  Uplink FPORT=2, Real time sensor value

SAC01L will send this uplink after Device Status uplink once join LoRaWAN network successfully. And it will periodically send this uplink. Default interval is 20 minutes and can be changed.

Uplink uses FPORT=2 and every 20 minutes send one uplink by default.

Example Payload (FPort=2):   0C D2 01 00 00 00 04 00 00 00 02

BAT:

• Example1:  0x0CD2/100=3.282
• Example2:  0xCD8/100=3.288

MOD:

• MOD:    0x01=1

sysTimeCurrent:

SAC01L use Unix TimeStamp format based on:

Users can get this time from the link:  https://www.epochconverter.com/ :

Below is the converter example.

Ex：66B5C1B0=2024-08-09 07:13:52

So, we can use AT+TIMESTAMP=1723187632 or downlink 66B5C1B0 to set the current time 2024 – August -- 9 Friday 07:13:52

OUT

• Example1:  0x00000004=4

INT

• Example1:  0x00000002=2

INT and OUT can be customized according to the situation, just swap the positions of INT and OUT in the decoder.

2.4.5  Decoder in TTN V3

In LoRaWAN protocol, the uplink payload is HEX format, user need to add a payload formatter/decoder in LoRaWAN Server to get human friendly string.

In TTN , add formatter as below: 

2.6  Datalog Feature

When user want to retrieve sensor value, he can send a poll command from the IoT platform to ask sensor to send value in the required time slot.

2.6.1  Unix TimeStamp

Unix TimeStamp shows the sampling time of uplink payload. format base on

User can get this time from link:  https://www.epochconverter.com/ :

For example: if the Unix Timestamp we got is hex 0x60137afd, we can convert it to Decimal: 1611889405. and then convert to the time: 2021 – Jan -- 29 Friday 03:03:25 (GMT)

2.6.2  Poll sensor value

2.8  LED Indicator

• When the node is restarted,  BLUE are sequentially lit.

• During OTAA Join:
  • For each Join Request uplink: the GREEN LED will blink once.
  • Once Join Successful: the GREEN LED will be solid on for 5 seconds.

• After joined, for each uplink, the BLUE LED or GREEN LED will blink once.
  • BLUE LED when external sensor is connected
  • GREEN LED when external sensor is not connected

2.9  Button

Press the button SAC01L will reset and join network again.

3.  Configure SAC01L via AT command or LoRaWAN downlink

Use can configure SAC01L via AT Command or LoRaWAN Downlink.

• AT Command Connection: See FAQ.

• LoRaWAN Downlink instruction for different platforms: IoT LoRaWAN Server

There are two kinds of commands to configure SAC01L, they are:

• General Commands:

These commands are to configure:

• General system settings like: uplink interval.

• LoRaWAN protocol & radio-related commands.

They are the same for all Dragino Devices which supports DLWS-005 LoRaWAN Stack(Note**). These commands can be found on the wiki: End Device Downlink Command

• Commands special design for SAC01L

These commands are only valid for SAC01L, as below:

3.1  Downlink Command Set

3.2  Set Password

Feature: Set device password, max 9 digits.

AT Command: AT+PWORD

Downlink Command:

No downlink command for this feature.

4.  FAQ

4.2  AT Command and Downlink

4.3  How to upgrade the firmware?

SAC01L requires a program converter to upload images to SAC01L, which is used to upload image to SAC01L for:

• Support new features
• For bug fix
• Change LoRaWAN bands.

4.4  How to change the LoRa Frequency Bands/Region?

User can follow the introduction for how to upgrade image. When download the images, choose the required image file for download.

5.  Order Info

5.1  Main Device

• AS923: LoRaWAN AS923 band
• AU915: LoRaWAN AU915 band
• EU433: LoRaWAN EU433 band
• EU868: LoRaWAN EU868 band
• KR920: LoRaWAN KR920 band
• US915: LoRaWAN US915 band
• IN865:  LoRaWAN IN865 band
• CN470: LoRaWAN CN470 band

6.  Packing Info

Package Includes:

• SAC01L  x 1

7.  Support

• Support is provided Monday to Friday, from 09:00 to 18:00 GMT+8. Due to different timezones we cannot offer live support. However, your questions will be answered as soon as possible in the before-mentioned schedule.
• Provide as much information as possible regarding your enquiry (product models, accurately describe your problem and steps to replicate it etc) and send a mail to support@dragino.com.

8.  FCC Warning

This device complies with part 15 of the FCC Rules.Operation is subject to the following two conditions:

(1) This device may not cause harmful interference;

(2) this device must accept any interference received,including interference that may cause undesired operation.
 

9. Appendix I:According to the use

Installed in the middle of the aisle threshold, it can detect the entire aisle to avoid omissions.

When pedestrians pass by, the image can be viewed through the host computer.