RFM31B Datasheet, PDF (56/63 Pages) List of Unclassifed Manufacturers – ISM RECEIVER

13. Ordering Information
Part Number=module type—operation band—package type
RFM31B—433—D
RFM31B
module type operation band Package
example：1，RFM31B module at 433MHz band, DIP : RFM31B-433-D。
2，RFM31B module at 868MHZ band, SMD, thickness at 4.9mm: RFM31B-868-S1。
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