... inatallment,substitutes to various similar import products.2, PY2 series: explosion-proof pressure sensor/transmitter.3, PY3 series:specified weighing sensor/transmitter ... , Voltage Meter, Ampere Meter, Counter, Tacho Meter, Frequency Meter, flowmeter,Timer,Timer Relay, Solid State Relay, Proximity Sensor, ,Pressure sensor ,load cell ...