Low onboard power amplifier module, the maximum output power of 2.5 W, voice loud and clear.
Low onboard volume, which may be adjusted according to the actual installation needs.
When a new circuit design, strong anti-jamming capability.
Low volume even smaller. 35.7 * 17.8 mm
New audio playback control algorithm, sound quality is better.
Support for multiple sampling format, can store up to 24 minutes sound (11025 hz 16-bit sampling sampling rate), voice can be arbitrary section, every sound can be any length.
Low voice messages can be recorded and broadcast every block. And can replace the voice messages at any time
Low control playback mode are:
UART serial port control, can control 200 audio broadcast. Work instruction is simple, baud rate can be set.
Low level trigger manner (key grounding or microcontroller IO port), can be connected to the 4 way normally open or normally closed contact control 4 sound.
485 chip 485 bus control (external). Suitable for far away, or more nodes.
Can also according to customer needs, develop you need to control methods.
Low on-board FLASH memory. A lower cost and better reliability.
To prevent misoperation, internal various protection measures.
The new standby mode, standby working current is only 0.3 mA
