Chengdu Ebyte Electronic Technology Co,;Ltd
E90-DTU (900SL30-GPRS) user manual
3 Application model
( 1 )E22-900TXXS + E90-DTU(900SL30- GPRS) + Server A
( 2 )E90-DTU(900SLxx) + E90-DTU(900SL30- GPRS) + Server A
( 3 )E22-900TXXS + E90-DTU(900SL30- GPRS) + Server A + Server B
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