Dahua model
HY-SA21A-W2
Dahua lists 1 firmware file for the HY-SA21A-W2. This is the retail model name. Inside the firmware, Dahua uses its own device IDs, listed below, which can lead you to more compatible firmware.
- Firmware files
- 1
- Newest
- Nov 28, 2025
- Listed by
- Dahua
Firmware
- DHI_HYSA21A-W2_Eng_MCU_V1.000.0000005.0.R.20251107.zipDownload
Released Nov 28, 2025 · V1.000.0000005.0.R · Microcontroller firmware · Dahua