# How to change ID of 7-in-1 soil sensor (RS485) **URL:** \ **Category:** Networking, Protocols, and Devices\ **Created:** [August 8, 2026, 1:05pm UTC](https://forum.arduino.cc/t/how-to-change-id-of-7-in-1-soil-sensor-rs485/1455043 "2026-08-08T13:05:27Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![razman\_ramedan](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/razman_ramedan/32/1126363_2.png) [@razman\_ramedan](https://forum.arduino.cc/u/razman_ramedan)\ **Post date:** [August 8, 2026, 1:05pm UTC](https://forum.arduino.cc/t/how-to-change-id-of-7-in-1-soil-sensor-rs485/1455043/1 "2026-08-08T13:05:27Z")
I bought 9 sensors from online store. I guess those sensors are from China. No markings or indications from which manufacturer. I have tested all the sensors. But, all 9 sensors have the same ID number (ID1). I want to make each sensor have different ID number (ID1, ID2, ID3,....., ID9). I have tried a few software like QModMaster, Hercules and SSCOM. But still no luck. Please suggest and give the download link of other software that I can use. Thanks in advanve. ---
**Author:** ![sonofcy](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/sonofcy/32/1283617_2.png) [@sonofcy](https://forum.arduino.cc/u/sonofcy)\ **Post date:** [August 8, 2026, 1:33pm UTC](https://forum.arduino.cc/t/how-to-change-id-of-7-in-1-soil-sensor-rs485/1455043/3 "2026-08-08T13:33:35Z")
Not possible, you have given us nothing to work with. Start with clearly visible photos from all 6 sides and a link to the data sheet. ---
**Author:** ![kmin](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/kmin/32/1147370_2.png) [@kmin](https://forum.arduino.cc/u/kmin)\ **Post date:** [August 8, 2026, 2:01pm UTC](https://forum.arduino.cc/t/how-to-change-id-of-7-in-1-soil-sensor-rs485/1455043/4 "2026-08-08T14:01:31Z")
You need working connection to the sensor and correct register address for ID. 0x0100 is used for ID by some of those. ---
**Author:** ![razman\_ramedan](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/razman_ramedan/32/1126363_2.png) [@razman\_ramedan](https://forum.arduino.cc/u/razman_ramedan)\ **Post date:** [August 8, 2026, 2:07pm UTC](https://forum.arduino.cc/t/how-to-change-id-of-7-in-1-soil-sensor-rs485/1455043/5 "2026-08-08T14:07:39Z")
![sensor info](https://europe1.discourse-cdn.com/arduino/original/4X/d/7/9/d7984fcbefa52c12cdb1c7d323e93147ceaab501.jpeg) ![sambungan soil sensor kepada USB-to-RS485 converter](https://europe1.discourse-cdn.com/arduino/original/4X/4/7/f/47fc7380bff68e00cf7ac1544580da71e0f6b770.jpeg) ---
**Author:** ![razman\_ramedan](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/razman_ramedan/32/1126363_2.png) [@razman\_ramedan](https://forum.arduino.cc/u/razman_ramedan)\ **Post date:** [August 8, 2026, 2:11pm UTC](https://forum.arduino.cc/t/how-to-change-id-of-7-in-1-soil-sensor-rs485/1455043/6 "2026-08-08T14:11:48Z")
![SSCOM screen](https://europe1.discourse-cdn.com/arduino/original/4X/8/f/b/8fb6467036bbaa74aea8a6bfe9338daa90edde8a.png) ---
**Author:** ![sonofcy](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/sonofcy/32/1283617_2.png) [@sonofcy](https://forum.arduino.cc/u/sonofcy)\ **Post date:** [August 8, 2026, 2:34pm UTC](https://forum.arduino.cc/t/how-to-change-id-of-7-in-1-soil-sensor-rs485/1455043/7 "2026-08-08T14:34:07Z")
Sorry, none of that helps. The last pic, though, looks like a simple case of the wrong BAUD; try them all until one works. You may also need to change START, STOP, etc. I don't read Chinese, so this is based on guesswork. Your best bet is to return or scrap this fake and get real soil testers (capacitive) for pH and moisture. Good luck. ---
**Author:** ![anon94801460](https://avatars.discourse-cdn.com/v4/letter/a/278dde/32.png) [@anon94801460](https://forum.arduino.cc/u/anon94801460)\ **Post date:** [August 8, 2026, 4:42pm UTC](https://forum.arduino.cc/t/how-to-change-id-of-7-in-1-soil-sensor-rs485/1455043/8 "2026-08-08T16:42:50Z")
> [@razman\_ramedan](#): > > I bought 9 sensors from online store. I guess those sensors are from China. Sorry to hear that. Those are indeed from China and, as most people soon discover, are nearly useless. They do not work as advertised.