TF PTC clamp-on sensor -35/105°C 6m TF PTC KTY81-210 6x50mm -35/105°C AMP TF PTC KTY81-221 5x20mm -50/110°C 1, 2m IP68 yellow;900001076 TF PTC M10x50mm -35/105°C 4m TF PTC M10x50mm -35/105°C 8m TF PTC wall-mounted housing 84x84x22mm TRL3-01.01 Data logger 32 channel RS485 TRL3-01.01 data logger 64 channel RS485 TRL-Gateway Data logger-LON TRL-sensor module multi-sensor 230V LON TRS200-01 fan control unit 0-24V TRT174-30.14 5x key K1234 STANDARD TRT174-30.14 5x key K1K2K3K4 K5=ALARM TRT174-30.14 5x key K1K3 rev TRT174-30.14 6x key K1K2K3K4 K5=heating TRT174-30.34 5x key K1K3 rev LON