High Precision Dual Axis Digital LORA Inclinometer Wireless Inclinometer Sensor ZCT600ML-215SR

Product Short Description


P/N ZCT600ML-215SR
Axis Dual axis
Accuracy 0.005~0.01 °
Resolution 0.001°
Power supply DC 3~15Vol
Total range ±15°
Output Lora protocol



How To Order


Ⅰ. Introduction

ZCT600ML-215SR wireless inclinometer is a high accuracy tilt sensor developed by Shanghai Zhichuan. Based on LoRa wireless transmitting technology, the inclinometer is capable of detecting ±15 degree tilt. It features embedded RTC, wireless awakening and low power consumption in sleep mode. It is suitable for safety monitoring in industrial production and construction.


Ⅱ. Special Features

Outstanding accuracy, high resolution, LoRa wireless communication, industrial class, maximum transmitting distance 5000m, wider range of power supply voltage accepted, with low power consumption IC, power switching and protective circuit, automatic selection of internal or external power supply, multiple work mode available, typical current in sleep mode 20uA, long working hours with batteries.


Ⅲ. Applications

Angle measurement, horizon adjustment, zero positioning, safety control, monitoring, alarming, initial position control, tilt posture recording.


Ⅳ. Technical Specifications

( Data collected at room temperature of 25℃, unless otherwise specified )

  1. Work Parameters








Power voltage

Internal power supply, external power supply




V (DC)

Static working current

Power voltage: 3.6V, with LoRa module, Standby mode, with no wireless signal transmitted




Sleep mode current

Power voltage: 3.6V, work on Normal or AutoSmp mode, at sleep status, with no wireless data (including intermittent LoRa wirelss CAD monitoring) sent or received




Peak operating current

Power voltage: 3.6V, LoRa module configured as node mode, sleep time: 4s, breath time: 32ms




Working temperature1

Without battery



Ordinary button type Lithium battery included





Range of measurement

X axis, Y axis




Room temperature, 9600baud
















Cross axis error



Zero temperature drift4






Refresh time5



Power-on time



Zero offset



Protection class

With outer case



Exterior measurements

Aluminum alloy case





Mode of power supply6

Internal power supply by Lithium sub-cell (non-chargeable)




V (DC)

External power supply via power adaptor




V (DC)

Note 1Range of working temperature is -20-60℃, which is limited by the working temperature range of the 3V button battery inside the product that supplies power to the RTC IC.

Note 2Resolution refers to the minimum variation that can be detected by the sensor while working in its valid range.

Note 3Accuracy refers to the difference between the real data and the data shown on the sensor.

Note 4Zero temperature drift refers to the angle offset after a minor change over room temperature, in case the fixed output angle is zero.

Note 5Refresh time refers to the time used to renew the angle data in either axis. Therefore, time intervals between two angle queries should be at least 30ms.

Note 6Lithium batteries are not rechargeable, otherwise there could be risk of explosion! When the battery is out of power, please replace it in time. Do not try to charge it!. There is a power supply switching circuit inside the product. When both internal and external power supply are available (no charging or discharging happens between the internal and external power; when the power supply switching circuit chooses to connect to one power, the other is disconnected), the circuit automatically switch to the power with higher voltage. Therefore, the voltage of the external power supply should be higher than that of the internal power supply, so as to make the life time of the internal battery as long as possible.


2. LoRa Module Specifications:







Transmitting Power



Receiving Sensitivity



Work Frequency






Ⅴ. Instructions On Use:

1. LoRa Module Configuration and Installation

Generally, the LoRa module that is installed on the inclinometer should be configured in node mode (baud rate is set to 9600, serial port parity is set to no parity), and the module communicating with it needs to be configured as central node and installed at the LoRa gateway, otherwise be used alone. The prerequisite for communication between the two modules is that the carrier frequency, the spread spectrum factor, the spread spectrum bandwidth and the network ID should be the same. When configuration is complete, open the top cover of the inclinometer and install the module on the module socket inside, and connect it to the IPEX connector of the antenna.


2. Selection of Power Supply Mode and Source of Power

The inclinometer is able to work either by mounting a C type lithium battery or connecting to an external power via a connector. The power supply voltage is DC 3~15V, with 150mA maximum discharge current and at least 400mA pulse discharge current. The use of power type lithium battery is recommended, due to the larger current consumption of the wireless module while transmitting data. An example, in case we choose internal power supply with one C type lithium battery, we simply open the top cover of the inclinometer, mount the battery onto the battery holder (the inclinometer begins to work, turns to sleep mode after the green light shines for 10 seconds, with regular sleep mode as the default mode), close the top cover, tighten the screws, so as to prevent moisture from entering inside and causing rust at the place where the battery contacts the holder.


3. Selection of Work Mode

There are four work modes: regular mode, running mode, automatic collecting mode and wait mode. In regular and automatic collecting mode, the product is mostly sleeping, with intermittent wireless CAD monitoring. It wakes up and processes data feedback when it receives a valid wireless command, and then gets back to sleep. Automatic collecting mode is nothing but regular mode plus timing collection function. While in running mode or wait mode, the product will not get into sleep, which is a low power consumption status. The difference between running mode and wait mode is that there is angle data being generated automatically in running mode, while in wait mode feedback of angle data is available only on query. When battery is used as source of power, regular mode or automatic collecting mode with lower average power consumption is generally selected. The factory default mode is regular mode.


4. Query on Tilt Data and Configuration of Angle Parameters

Query on tilt data and configuration of angle parameters (refer to “ZCT600ML-GW User’s Manual” for related settings and query commands) are available with our LoRa gateway products. A LoRa gateway can be included in a star topology network, together with multiple LoRa inclinometers, so the LoRa gateway is able to query data from all the inclinometers in the network and configure their parameters. Query on tilt data and configuration of parameters can also be achieved through a individual LoRa module (for related settings and query commands, refer to “Communication Protocol” section of this user’s manual). The most outstanding advantage of a LoRa gateway is that by querying it we can acquire data from all the LoRa inclinometers within the network.


5. Description on Work Status and Indicator Light

1The green light on the inclinometer turns on for 10s (power supply voltage above 3V) to indicate regular start-up, regardless of work mode. Sending valid commands within 10s after start-up will reset the timing and restart timing for 10s. Sleep mode indicator light turns off to save energy.

2In running or wait mode, the green indicator light is on when the power supply voltage detected is over 3V DC, otherwise the red indicator light keeps turning on (1s) and turning off (4s), suggesting that the power voltage is too low and the battery needs to be replaced.

3In regular or automatic collecting mode, if the waiting time is set to a non-zero value, the status of the indicator lights is the same as that in running or wait mode, but when the waiting time is over or an immediate sleep command is sent, the indicator light turns off and the product gets into sleep status with low power consumption. In case of 0 waiting time (default), when a valid command is received, the corresponding indicator light flashes, depending on whether the power supply voltage is over 3V. The green light flashes if it’s over 3V, otherwise the red light flashes.

4In sleep mode, if the query command received is not related to power supply voltage or configuration, the corresponding indicator light on the inclinometer flashes, depending on whether the power supply voltage detected last time was over 3V or not. The green light flashes if it’s over 3V, otherwise the red light flashes.


Ⅵ. Pin Configuration:

Pin configuration of the 4P male socket:

Pin No.






Power positive



Power negative



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