The 4353218 is an electric pressure calibrator featuring an integrated pump for one-handed pressure generation and testing. It functions as a full loop calibrator, capable of sourcing, simulating, and measuring mA signals with 0.015% accuracy, and includes a 24V loop power supply. The device achieves a pressure measurement accuracy of ±0.035% of full scale (1 year) and is available in ranges up to 300 PSI. Key features include a programmable pump limit to prevent over-pressurization, a precision adjustment vernier, and an easy-to-use switch test function. It is an ideal tool for technicians calibrating pressure transmitters, gauges, and switches in the field.