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937	937
938	938	You can change the battery in the LSPH01.The type of battery is not limited as long as the output is between 3v to 3.6v. On the main board, there is a diode (D1) between the battery and the main circuit. If you need to use a battery with less than 3.3v, please remove the D1 and shortcut the two pads of it so there won’t be voltage drop between battery and main board.
939	939
940		-
941	941	The default battery pack of LSPH01 includes a ER26500 plus super capacitor. If user can’t find this pack locally, they can find ER26500 or equivalence, which will also work in most case. The SPC can enlarge the battery life for high frequency use (update period below 5 minutes)
942	942
943	943
944	944
	944	+= 5. Use AT Command =
945	945
	946	+== 5.1 Access AT Commands ==
946	946
947		-
948		-1. Use AT Command
949		-11. Access AT Commands
950		-
951	951	LSPH01 supports AT Command set in the stock firmware. You can use a USB to TTL adapter to connect to LSPH01 for using AT command, as below.
952	952
953		-[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image025.png]]
	950	+[[image:1654589001411-343.png]]
954	954
955	955	Connection:
956	956
957	957	USB TTL GND <~-~-~-~-> GND
958	958
959		-USB TTL TXD <~-~-~-~-> UART_RXD
	956	+USB TTL TXD  <~-~-~-~-> UART_RXD
960	960
961		-USB TTL RXD <~-~-~-~-> UART_TXD
	958	+USB TTL RXD  <~-~-~-~-> UART_TXD
962	962
963	963
964	964	In the PC, you need to set the serial baud rate to **9600** to access the serial console for LSPH01. LSPH01 will output system info once power on as below:

1654589062541-567.png

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	1	+XWiki.Xiaoling

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