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Table of Contents

1. Version History

Version	Date	Change
1.0.0	February 18, 2025	Created
1.0.1	April 24, 2026	Formatting, version history

2. Overview

This chapter describes the structure of the telemetry data. The number of bytes in the payload depends on the sensor configuration. The data structure depends on which sensors are present in your product.

In principle, every version has a header. This contains information about the version and the status of the sensor, as well as a master measurement value. This measurement value can simply be assumed to be the current measurement value.

The header is followed by an additional payload section that contains further information, such as specific parameters for the measurement principle or settings for position and opening detection. Not every sensor has an additional payload section.

Terms	Description
Byte No.	Byte number starting at 1
Alias	Descriptive name of the variable
Description	Description of the variable
Name	Name in the data converter
Unit	Unit of the variable
Datahub .json key	Key in the .json file when using the Datahub

3. Structure of the Module Key

Byte 1		Byte 2
Bits 7–4	Bits 3–0	Bits 7–4	Bits 3–0
Base ID Module e.g., Sentiface, Senticom, Sentivisor	Major Version (SW/HW Version)	Minor Version (SW/HW Version)	Product Version (Sensors, e.g., TH, THL, ACC, …)

The module key for the SENTIFACE module can be extracted from the first 2 bytes of each uplink . The module key is required for the downlink.

Uplink Example (not applicable to Juno)

Uplink Payload-Dekodierungsbeispiel — Figure 1: Uplink Payload Decoding.

The following payload example is provided for the Helios pressure sensor:

11 11 FE 1A D5 95 06 03 00 23 BE

Bytes	1	2	3	4	5	6	7	8	9	10	11
`HEX`	`11`	`11`	`FE`	`1A`	`D5`	`95`	`06`	`03`	`00`	`23`	`BE`
Description	Module Key	Module Key	Uplink Counter	Battery Voltage	Battery Voltage	Temperature	Alarm Flag	Alarm Flag	Measurement Status	Pressure (mbar)	Pressure (mbar)

4. JUNO Payload Description

Byte Number	Alias Name	Description	Unit	Name in Payload Decoder	Module Key	Datahub .json Key
1 – 2	Module Key	Byte 1: 4 bits MSB: Module code. For Mioty, exclusively "Sentiface" Telemetry module, i.e., always `0x1`. 4-bit LSB: Major version. Firmware of the same major version but a higher minor version remains compatible with older decoders. However, the number of bytes may change! Byte 2: 4-bit MSB: Minor version. New software versions may incrementally append new telemetry data to the data packet. 4-bit LSB: Sub/product version. For Helios, these bits encode the specific configuration of the connected sensors.		`module_key`	`XXX1`	`module_key`
3	Uplink counter	Protocol -independent uplink counter that ranges up to 255. After that, the counter resets to 0.		`uplink_counter`	`XXX1`	`uplink_counter`
4 – 5	Battery Voltage	Current battery voltage in millivolts. Voltage in volts: `battery_voltage = (dataBytes[3] << 8 \| dataBytes[4]) / 1000.0`	mV	`battery_voltage`	`XXX1`	`battery_voltage`
6	Internal temperature	Sensor temperature: `internal_temperature = bytes[6] - 128` This value is the controller's temperature reading and is an approximate temperature value with a margin of error of ±2 °C.	°C	`internal_temperature`	`XXX1`	`internal_temperature`
7	Accelerometer Status	`0`: Accelerometer OK Other: Accelerometer error		`acc_status`	`XXX1`	`acc_status`
8	Sensor orientation	Displays the sensor's orientation: `0`: Vertical – lying on its side `1`: Face Up `2`: Face Down `3`: Error		`orientation`	`XXX1`	`orientation`
9	Angle	Returns the angle in °, resolution 1°.	°	`angle`	`XXX1`	`angle`
10	Open	Indicates whether the flap is open or closed.		`is_open`	`XXX1`	`is_open`
11	Relative opening count	Indicates how many openings have occurred since the last uplink.		`open_cnt_rel`	`XXX1`	`open_cnt_rel`
12	Lifetime open count	Indicates how many openings have been performed during the entire operation.		`open_cnt_rel`	`XXX1`	`open_cnt_total`

Juno ID TILT payload description

Are you looking for the Juno ID TILT payload description?

1. Version History

2. Overview

3. Structure of the Module Key

Uplink Example (not applicable to Juno)

4. JUNO Payload Description