Changes for page LHT52 - LoRaWAN Temperature & Humidity Sensor User Manual
Last modified by Mengting Qiu on 2024/04/30 14:27
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... ... @@ -27,7 +27,7 @@ 27 27 * Frequency Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915 28 28 * AT Commands to change parameters 29 29 * Remote configure parameters via LoRaWAN Downlink 30 -* Firmware upgradable via program port 30 +* Firmware upgradeable via program port 31 31 * Built-in 2400mAh battery for up to 10 years of use. 32 32 * Built-in Temperature & Humidity sensor 33 33 * Optional External Sensors ... ... @@ -34,7 +34,6 @@ 34 34 * Tri-color LED to indicate working status 35 35 * Datalog feature 36 36 37 - 38 38 == Specification: == 39 39 40 40 **Built-in Temperature Sensor:** ... ... @@ -58,10 +58,99 @@ 58 58 * ±2°C accuracy from -55°C to +125°C 59 59 * Operating Range: -55 °C ~~ 125 °C 60 60 60 += Connect LHT65N to IoT Server = 61 61 62 +== How does LHT65N work? == 63 + 64 +LHT65N is configured as LoRaWAN OTAA Class A mode by default. Each LHT65N is shipped with a worldwide unique set of OTAA keys. To use LHT65N in a LoRaWAN network, first, we need to put the OTAA keys in LoRaWAN Network Server and then activate LHT65N. 65 + 66 +If LHT65N is under the coverage of this LoRaWAN network. LHT65N can join the LoRaWAN network automatically. After successfully joining, LHT65N will start to measure environment temperature and humidity, and start to transmit sensor data to the LoRaWAN server. The default period for each uplink is 20 minutes. 67 + 68 + 69 +== How to Activate LHT65N? == 70 + 71 +The LHT65N has two working modes: 72 + 73 +* **Deep Sleep Mode**: LHT65N doesn’t have any LoRaWAN activation. This mode is used for storage and shipping to save battery life. 74 +* **Working Mode**: In this mode, LHT65N works as LoRaWAN Sensor mode to Join LoRaWAN network and send out the sensor data to the server. Between each sampling/tx/rx periodically, LHT65 will be in STOP mode (IDLE mode), in STOP mode, LHT65N has the same power consumption as Deep Sleep mode. 75 + 76 +The LHT65N is set in deep sleep mode by default; The ACT button on the front is to switch to different modes: 77 + 78 +[[image:image-20220515123819-1.png||height="379" width="317"]] 79 + 80 +|**Behavior on ACT**|**Function**|**Action** 81 +|**Pressing ACT between 1s < time < 3s**|Test uplink status|If LHT65N is already Joined to the LoRaWAN network, LHT65N will send an uplink packet, if LHT65N has an external sensor connected, blue led will blink once. If LHT65N has no external sensor, red led will blink once. 82 +|**Pressing ACT for more than 3s**|Active Device|green led will fast blink 5 times, LHT65N will enter working mode and start to JOIN LoRaWAN network. green led will solid turn on for 5 seconds after join in network. 83 +|**Fast press ACT 5 times**|Deactivate Device|red led will solid on for 5 seconds. This means LHT65N is in Deep Sleep Mode. 84 + 85 +== LED Indicator == 86 + 87 +The LHT65N has a triple color LED which for easy shows different stage. 88 + 89 +While pressing ACT button, the LED will work as per LED status with ACT button. 90 + 91 +In a normal working state: 92 + 93 +* For each uplink, the BLUE LED or RED LED will blink once. 94 +* BLUE LED when an external sensor is connected 95 +* RED LED when an external sensor is not connected 96 +* For each success downlink, the PURPLE LED will blink once 97 + 98 +---- 99 + 100 +== Installation == 101 + 102 +[[image:image-20220516231650-1.png||height="632" width="620"]] 103 + 104 + 105 + 106 + 107 += Sensors & Accessories = 108 + 109 +== E3 Temperature Probe == 110 + 111 +[[image:image-20220515080154-4.png||height="182" width="161"]] [[image:image-20220515080330-5.png||height="201" width="195"]] 112 + 113 + 114 +With Temperature sensor with 2 meters cable long 115 + 116 +* Resolution: 0.0625 °C 117 +* ±0.5°C accuracy from -10°C to +85°C 118 +* ±2°C accuracy from -55°C to +125°C 119 +* Operating Range: -40 ~~ 125 °C 120 +* -55°C to 125°C 121 +* Working voltage 2.35v ~~ 5v 122 + 123 + 124 += Battery & How to replace = 125 + 126 +== Battery Type == 127 + 128 +LHT65N is equipped with a 2400mAH Li-MnO2 (CR17505) battery . The battery is an un-rechargeable battery with low discharge rate targeting for up to 8~~10 years use. This type of battery is commonly used in IoT devices for long-term running, such as water meters. 129 + 130 +The discharge curve is not linear so can’t simply use percentage to show the battery level. Below is the battery performance. 131 +[[image:image-20220515075034-1.png||height="208" width="644"]] 132 + 133 + 134 +The minimum Working Voltage for the LHT65N is ~~ 2.5v. When battery is lower than 2.6v, it is time to change the battery. 135 + 136 + 137 +== Replace Battery == 138 + 139 +LHT65N has two screws on the back, Unscrew them, and changing the battery inside is ok. The battery is a general CR17450 battery. Any brand should be ok. 140 + 141 +[[image:image-20220515075440-2.png||height="338" width="272"]][[image:image-20220515075625-3.png||height="193" width="257"]] 142 + 143 + 144 +== Battery Life Analyze == 145 + 146 +Dragino battery-powered products are all run in Low Power mode. User can check the guideline from this link to calculate the estimated battery life: 147 +https:~/~/www.dragino.com/downloads/downloads/LoRa_End_Node/Battery_Analyze/DRAGINO_Battery_Life_Guide.pdf 148 + 149 + 62 62 = Order Info = 63 63 64 -Part Number: (% class="mark" %)**LHT65-XX** 152 +Part Number: (% class="mark" %)**LHT65N-XX** 65 65 66 66 **XX**: The default frequency band 67 67 ... ... @@ -74,7 +74,10 @@ 74 74 * **IN865**: LoRaWAN IN865 band 75 75 * **CN470**: LoRaWAN CN470 band 76 76 165 +**YY**: Sensor Accessories 77 77 167 +* **E3**: External Temperature Probe 168 + 78 78 = Packing Info = 79 79 80 80 **Package Includes**: ... ... @@ -90,4 +90,10 @@ 90 90 * Package Size / pcs : 14.5 x 8 x 5 cm 91 91 * Weight / pcs : 170g 92 92 93 - 184 += FCC Warning = 185 + 186 +This device complies with part 15 of the FCC Rules.Operation is subject to the following two conditions: 187 + 188 +(1) This device may not cause harmful interference, and 189 + 190 +(2) this device must accept any interference received, including interference that may cause undesired operation
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