Mindray P8-3Ts TEE phased array probe has 2.8 – 7.0 MHz frequency. A Pediatric TEE Transducer. Mindray P8-3Ts TEE phased array probe is designed for cardiac imaging applications and runs on the Mindray M7 Premium, Mindray M8 Elite, Mindray M9, Mindray TE7 ultrasound machines.