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The OE21, in addition to all the benefits of the OE20 module, provides +20dBm of transmit power (vs +13dBm for OE20), as well as double the flash size for larger bytecode apps and upgradable firmware.
|Dimensions||1.85" x 1.10" x 0.31" (47mm x 28mm x 8mm)|
|Warranty||One (1) year parts and service|