RKI AirLink 6940NXP Quad Transmitter, Non Explosion Proof Description:for 2 sensors-sensor assemblies selection needed PART# 74-429NXP there is also a probe

there is also a probe holder on the front of the faceplate

SELF TESTS - Probe Circuit Tester

Optical reader for setting up a Levelogger 5 and offloading data in an office setting

The level data is automatically compensated for temperature

RKI AirLink 6940NXP Quad Transmitter, Non Explosion Proof Description:for 2 sensors-sensor assemblies selection needed PART# 74-429NXP there is also a probeRKI AirLink 6940NXP Quad Transmitter, Non Explosion Proof The RKI AirLink 6940NXP series AC powered ambient air multi gas detector simultaneously uses up to four sensor elements to detect an array of gases. The Assembly reports once a minute, however the reporting rate will increase to once every five seconds if the target gases exceed a preset background level. Operates from an AC power supply with an internal backup battery pack. Magnetic switches