![background image](http://html.mh-extra.com/html/king-pigeon/gsm-3g-m2m-rtu/gsm-3g-m2m-rtu_user-manual_1969939015.webp)
Page 15 of 15 Ver 1.0 File No.:S27x10
GSM 3G M2M RTU
Automation solution
8.Upgrade Firmware
The GSM 3G M2M RTU supports upgrade firmware via USB port directly. If there any new requirements
should update the firmware, the user can upgrade them directly by USB port. if you required upgrade,
please contact us to modify the firmware according to you requirements, and we will provide the upgraded
firmware to you to upgrade them.
9. Warranty
1) The RTU is warranted to be free of defects in material and workmanship for one year from the date of
purchase.
2) This warranty does not extend to any defect, malfunction or failure caused by abuse or misuse by the
Operating Instructions.