The extremely power saving RF transmitter module STM 332U (whip antenna, side oriented LRN button) and STM 333U (including solar cell, helical antenna and side oriented LRN button) of EnOcean are optimized for realization of wireless and maintenance free temperature sensors, or room operating panels including set point dial and occupancy button with a minimum number of external components. The module provides an integrated calibrated temperature sensor.
STM 332U and STM 333U also support the plug-in humidity sensor module HSM 100.
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