... NRF905 Wireless Module (compatiable PTR8000+) Wireless Transmission Transceiver Module 433/868/915MHz Product DescriptionFeatures:Tri-band transceiver operating ... / sWorking voltage :2.7 - 3 .3 VApplication:Vehicle monitoring, remote control, telemetry, small wireless network, wireless ... tags, identification, non-contact RF smart cards, small wireless data terminals, security, fire systems, wireless ...