The DL-RTC1101-433M with Wireless Modules Module RoHS is an electronic part manufactured by DreamLNK that is used for, but not limited to, temperature, humidity, and atmospheric pressure sensing applications. It is a complete wireless sensing module capable of measuring, processing, and transmitting data to a host system up to a 500m distance. The module consists of an RTC1010 ultra-low-power MCU, one 433MHz radio transceiver, and an on-board sensor. It also features an 8kB SRAM, and an 8kB non-volatile FRAM memory that is used to store the real-time clock time and data from the sensors. The module is RoHS compliant and is designed to work at extreme temperatures ranging from -30 to +85°C.