e.g.  China

Alps Energy Harvester SPGA

The SPGA Series Energy Harvester is just a compact power-generating device employing electromagnetic induction to generate power without RF module. Combined with low-power wireless technology , the device can function as a RF switch.

EasySens® SRC-AO Climate

Unidirectional flush-mounted receiving actuator for room temperature control of proportional heating or cooling valves (type V with 1x 0..10 V), proportional heating and cooling valves (type VV with 2x 0..10 V) or 6-way valves (type 6WV).