These are generic devices made by an unknown manufacturer. Since they are generic devices I cannot provide a datasheet. The low price reflects that they may not be fit for your purpose.
This item is sold as a lot of 20 pieces.
Please Note: Items delivered using complimentary standard shipping are sent as a first class letter and will only include limited tracking data. If you would like or require full tracking information, please upgrade to the First Class Package option.
Please also be aware that this item cannot be shipped to PO Boxes, to international destinations, or to freight forwarders at this time. Orders to freight forwarders will be cancelled!