# ZENNER EASY PROTECT Radio decoder **URL:** \ **Category:** Hardware\ **Created:** [October 20, 2022, 12:10am UTC](https://www.thethingsnetwork.org/forum/t/zenner-easy-protect-radio-decoder/59486 "2022-10-20T00:10:02Z")\ **Posts on this page:** 9\ **Page:** 1
**Author:** ![HSN-TTN](https://www.thethingsnetwork.org/forum/user_avatar/www.thethingsnetwork.org/hsn-ttn/32/46690_2.png) [@HSN-TTN](https://www.thethingsnetwork.org/forum/u/HSN-TTN)\ **Post date:** [October 20, 2022, 12:10am UTC](https://www.thethingsnetwork.org/forum/t/zenner-easy-protect-radio-decoder/59486/1 "2022-10-20T00:10:02Z")
Good morning, I am looking for a TTN decoder for the ZENNER EASY PROTECT radio. Unfortunately I am not so well versed that I can create this asu the instructions myself. I’ve found 2 on the net, but unfortunately they don’t work for me. Does anyone have this in operation and a working decoder to hand that I can use? Thanks ---
**Author:** ![MarcVanBracht](https://www.thethingsnetwork.org/forum/user_avatar/www.thethingsnetwork.org/marcvanbracht/32/44818_2.png) [@MarcVanBracht](https://www.thethingsnetwork.org/forum/u/MarcVanBracht)\ **Post date:** [October 26, 2022, 10:29am UTC](https://www.thethingsnetwork.org/forum/t/zenner-easy-protect-radio-decoder/59486/2 "2022-10-26T10:29:36Z")
I use this one: /\* - studierendenwerk-ulm/payload-decoder-zenner-easy-protect-radio-lora/master/decoder.js \*/ /\*\* - Main decoder function - @param bytes - @param port - @constructor _/ function Decoder(bytes, port) { if(bytes === null || bytes === 0){ [//obj.port](https://obj.port) = port; obj.status\_dedcoded = false; obj.status\_info = "payload\_raw: " + payloadRawHexToString(bytes); } else { // Definition of head line daily value. /_ let S\_SMOKE\_CHAMBER\_POLLUTION\_PREWARNING = 0x0800; let S\_SMOKE\_CHAMBER\_POLLUTION\_WARNING = 0x1000; let S\_TEST\_BUTTON\_FAILUER = 0x2000; let S\_ACCUSTIC\_ALARM\_FAILUER = 0x4000; let S\_REMOVAL\_DETECTION = 0x8000; let S\_TEST\_ALARM = 0x0001; let S\_SMOKE\_ALARM = 0x0002; let S\_OBSTRUCTION\_DETECTION = 0x0004; let S\_SURROUNDING\_AREA\_MONITORING = 0x0008; let S\_LED\_FAILURE = 0x0010;\*/ /\*\* - decodes date (EN13757-3:2013, Annex A, data type G). - input: int, lower two bytes interpreted. - output: date string YYYY-MM-DD. - @param bytes - @returns {string} \*/ function decodeDate(bytes) { //TODO Handling errors with 0xFF see LoRa radio packet definitions page 15 var day = (bytes & 0x1F00) \>\> 8; var month = (bytes & 0x000F); var year = ((bytes & 0xE000) \>\> 10) | ((bytes & 0x00F0) \>\> 4); return “20” + year.toString() + “-” + month.toString() + “-” + day.toString(); } /\*\* - Date and time format. - Date&Time stamp coding according to EN13757-3:2013, Annex A, data type F - @param bytes - @returns {string} \*/ function decodeDateAndTime(bytes) { var minute = (bytes & 0x3F000000) \>\> 24; var hour = (bytes & 0x001F0000) \>\> 16; var day = (bytes & 0x00001F00) \>\> 8; var month = (bytes & 0x0000000F); var year = ((bytes & 0x0000E000) \>\> 10) | ((bytes & 0x000000F0) \>\> 4); return “20” + year.toString() + “-” + month.toString() + “-” + day.toString() + “T” + hour.toString() + “:” + minute.toString() + “:00Z”; } /\*\* \* - @param byteArray - @returns {string} \*/ function payloadRawHexToString(byteArray) { var str; if(byteArray === null){ return “00”; }else { str = byteArray.map(function (byte) { return (‘0’ + (byte & 0xFF).toString(16)).slice(-2); }).join(‘’); var strArray = str.match(/.{2}/g); str = strArray.map(function (value, index, array) { return array[index]; }); var x = str.join(); return x.replace(/([,])/g, " ").toLocaleUpperCase(); } } /\*\* - Build the summary for package 9.1. - @param a - @param b - @param S\_STATUS\_SUMMERY\_VALUES - @returns {} \*/ function buildStatusSummery(a, b,S\_STATUS\_SUMMERY\_VALUES) { ---
**Author:** ![MarcVanBracht](https://www.thethingsnetwork.org/forum/user_avatar/www.thethingsnetwork.org/marcvanbracht/32/44818_2.png) [@MarcVanBracht](https://www.thethingsnetwork.org/forum/u/MarcVanBracht)\ **Post date:** [October 26, 2022, 10:31am UTC](https://www.thethingsnetwork.org/forum/t/zenner-easy-protect-radio-decoder/59486/3 "2022-10-26T10:31:38Z")
But I do not get the data correcly into Datacake…as I do not have the knowledge of java, databases and decoding the info ---
**Author:** ![HSN-TTN](https://www.thethingsnetwork.org/forum/user_avatar/www.thethingsnetwork.org/hsn-ttn/32/46690_2.png) [@HSN-TTN](https://www.thethingsnetwork.org/forum/u/HSN-TTN)\ **Post date:** [October 26, 2022, 4:13pm UTC](https://www.thethingsnetwork.org/forum/t/zenner-easy-protect-radio-decoder/59486/4 "2022-10-26T16:13:16Z")
Can you please the complete payload in code. I can not copy it. THX ---
**Author:** ![MarcVanBracht](https://www.thethingsnetwork.org/forum/user_avatar/www.thethingsnetwork.org/marcvanbracht/32/44818_2.png) [@MarcVanBracht](https://www.thethingsnetwork.org/forum/u/MarcVanBracht)\ **Post date:** [October 27, 2022, 4:45pm UTC](https://www.thethingsnetwork.org/forum/t/zenner-easy-protect-radio-decoder/59486/5 "2022-10-27T16:45:51Z")
Hi , how do I do that…? Marc ---
**Author:** ![HSN-TTN](https://www.thethingsnetwork.org/forum/user_avatar/www.thethingsnetwork.org/hsn-ttn/32/46690_2.png) [@HSN-TTN](https://www.thethingsnetwork.org/forum/u/HSN-TTN)\ **Post date:** [October 28, 2022, 4:05am UTC](https://www.thethingsnetwork.org/forum/t/zenner-easy-protect-radio-decoder/59486/6 "2022-10-28T04:05:47Z")
Write in a File und Upload here. This is the best way. ---
**Author:** ![MarcVanBracht](https://www.thethingsnetwork.org/forum/user_avatar/www.thethingsnetwork.org/marcvanbracht/32/44818_2.png) [@MarcVanBracht](https://www.thethingsnetwork.org/forum/u/MarcVanBracht)\ **Post date:** [October 28, 2022, 4:48am UTC](https://www.thethingsnetwork.org/forum/t/zenner-easy-protect-radio-decoder/59486/7 "2022-10-28T04:48:20Z")
Hi HSN-TTN attached the file [Zenner.txt](https://www.thethingsnetwork.org/forum/uploads/short-url/lgp95HVUbFHZNnkCAMceb1GTbS.txt) (9.1 KB) Let me know if you can download the file Best Marc ---
**Author:** ![HSN-TTN](https://www.thethingsnetwork.org/forum/user_avatar/www.thethingsnetwork.org/hsn-ttn/32/46690_2.png) [@HSN-TTN](https://www.thethingsnetwork.org/forum/u/HSN-TTN)\ **Post date:** [April 11, 2023, 4:12am UTC](https://www.thethingsnetwork.org/forum/t/zenner-easy-protect-radio-decoder/59486/8 "2023-04-11T04:12:51Z")
Hello, Unfortunately I only got around to testing now. But the payload only brings me: Decode uplink data message failure ---
**Author:** ![tom1000](https://www.thethingsnetwork.org/forum/letter_avatar_proxy/v4/letter/t/6f9a4e/32.png) [@tom1000](https://www.thethingsnetwork.org/forum/u/tom1000)\ **Post date:** [July 20, 2024, 3:35pm UTC](https://www.thethingsnetwork.org/forum/t/zenner-easy-protect-radio-decoder/59486/9 "2024-07-20T15:35:53Z")
Just an update on this old thread, my ZENNER devices seem to work fine with TTN and I just share my experience here: - I bought 8 of the Zenner Easy Protect Radio LoRaWAN directly from here: [ZENNER LoRaWAN® Rauchwarnmelder EASY PROTECT RADIO](https://iot.zenner.shop/ZENNER-LoRaWAN-Rauchwarnmelder-EASY-PROTECT-RADIO-p-160928) - On the delivery note (only the paper version in the parcel!), I automatically received a password for a portal website where I can see and download meta data including the EUIs, AppKey, FW-Version, LoRaWan version, etc. - As soon as I mounted the devices on the base plate, the devices turned on and I was able to join the devices to TTN via OTAA. - As payload formatter I use: [loracodede/lorawan\_payload\_decoder: This project provides a collection of LoRaWAN payload decoders designed to interpret and transform data transmitted over the LoRaWAN (Long Range Wide Area Network) into a human-readable format. The decoder facilitates the integration of LoRaWAN into various applications. - Codeberg.org](https://codeberg.org/loracodede/lorawan_payload_decoder) - Every night the devices send a status message. If I remove a device it sends an “Alert” status message before it turns off. I did not test any other alert type yet.