Help decoding 433 mhz RF temperature and humidity sensor

I think you have to subtract 1000 and divide by 10 to get Celsius value...
(1000 -1000) / 10.0 = 0.0C

(1143 - 1000) / 10.0 = 14.3C

(1196 - 1000) / 10.0 = 19.6C