Description: this wireless module (transmitter and receiver) based on the si443 chipset. Ranges up to 1000 meters can be achieved! Easy connection to Arduino etc. Ultra-thin small, pi connection, stamp hole interface facilitate embedded design, stable performance. Module integrates all rf-related features and components. User even does not need to understand the knowledge of radio, you can easily develop a stable and reliable. Performance of wireless-related products with this module. Material: plastic, metal. Size: 1. 6x1. 7Cm. Color: as picture show. Specifications: transmission distance (maximum): 1000 meters. Frequency range: 433mhz ism. Sensitivity = -121 dbm. Output power range: +20 dbm. Max data rate = 0. 123 To 256 kbps. Fsk, gfskand ook modulation. Power supply = 1. 8 To 3. 6 V. Ultra low power shutdown mode. Digital rssi wake-up timer. Auto-frequency calibration (afc). Power-on-reset (por). Antenna diversity and tr switch control. Configurable packet handler. Preamble detector. Tx and rx 64 byte fifos. Low battery detector. Temperature sensor and 8-bit adc. –40 To +85°c temperature range. Integrated voltage regulators. Frequency hopping capability. On-chip crystal tuning. Good quality, best price, easy transaction, excellent buying experience. Buy today and you will get the following item. 1 X si4432 wireless communication module.