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2. TR-81 Key Phase Sensor
3. TR81 eddy current displacement sensor
4. LT-FHW-A magnetic induction oil level controller
5. LT-FHW-A750 oil level gauge
6. DTC21DTC21-150/42-T00 Cable Displacement Sensor
7. DTC21-150/42-T00 Cable Displacement Sensor
8. SWJ-III Water Level Differential Monitor Upgrade
9. SWJ Water Level Monitor
10. SWJ-1-1 Intelligent Water Level Monitor Device
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