i got a bunch of these, brand new, im not gonna use anymore. we originally got them for an access control project. they come in fob's. datasheet here http://datasheets.maximintegrated.com/en/ds/DS1990A.pdf. im looking for temperature i buttons specifically, or i2c rtc's with alarms, or any weather type sensor ie temperature, humidity. i also have the recepticles for these that work well with arduino's. recepticle has two wires, gnd and onewire.