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2 Key E (pre-installed WIFI+BT：8265
LM2907 freq to voltage
high-speed embedded memories (192 Kbytes of Flash program memory
R718N1 is a 1-phase current meter to be connected to an external current transformer
WS101 LoRaWAN Smart Button Programmers & Debuggers 2 Key E (pre-installed WIFI+BT：8265WS101 LoRaWAN Smart Button Multiple Press Actions LoRaWAN Based Easy Configuration (via NFC) 5 Years Battery Life Milesight WS101 is a LoRaWAN based smart button for wireless controls, triggers and alarms. WS101 supports multiple press actions, all of which can be defined by the user to control devices or trigger scenes. Besides, Milesight also provides a red button that is primarily used to send SO alarms. Compact and battery powered, WS101 is easy