The TRM54P Kaha Sciences Rat Pressure telemeter is suitable for use in rats >175 g. The TRM54P measures high-fidelity pressure using a solid-state Millar sensor. Pressure is measured directly at the tip of the 9cm catheter and the telemeter can be used to measure arterial, venous, ventricular or intracranial pressure (25 cm catheter required). The TRM54P is compatible for use with the TR181 SmartPad (or TR180 SmartPad) and TR190 Configurator.Made of biocompatible silicone, the telemeter weighs approximately 12 g and includes a Millar solid state pressure sensor (2Fr in diameter, 9 cm long (15 cm & 25 cm options available)). When used on the SmartPad, 24/7 data transmission is available. The battery in the TRM54P allows the telemeter to continue transmitting data for 4-6 hours if away from the SmartPad recharging field.