| STT | Model | Mô tả sản phẩm | Xuất xứ |
| 1 | AVDTXX | Duct Air Velocity Transmitter, 0-2/10/20 m/s (0-393.7/1968.5/3937 fm) Selectable, 0-50 C (32-122 F) | GreyStone/Finland |
| 2 | AVDTXX100 | Duct Air Velocity Transmitter, 0-2/10/20 m/s (0-393.7/1968.5/3937 fm), 0-50 C (32-122 F), 100 mm (3.94″) Probe | GreyStone/Finland |
| 3 | AVDTXX400 | Duct Air Velocity Transmitter, 0-2/10/20 m/s (0-393.7/1968.5/3937 fm), 0-50 C (32-122 F), 400 mm (15.75″) Probe | GreyStone/Finland |
| 4 | AVDTMX | Duct Air Velocity Transmitter, 0-2/10/20 m/s Selectable, 0-50 C, LCD | GreyStone/Finland |
| 5 | AVDTMX100 | Duct Air Velocity Transmitter, Display, 0-2/10/20 m/s, 0-400/2000/4000 fpm Selectable, 0-50 C (32-122 F), 100 mm (3.94″) Probe | GreyStone/Finland |
| 6 | AVDTMX400 | Duct Air Velocity Transmitter, Display, 0-2/10/20 m/s, 0-400/2000/4000 fpm Selectable, 0-50 C (32-122 F), 400 mm (15.75″) Probe | GreyStone/Finland |
| 7 | AVDTMR | Duct Air Velocity Transmitter, 0-2/10/20 m/s Selectable, 0-50 C, LCD, Adjustable Relay | GreyStone/Finland |
| 8 | AVDTMR100 | Duct Air Velocity Transmitter, Display, 0-2/10/20 m/s, 0-400/2000/4000 fpm Selectable, 0-50 C (32-122 F), Relay, 100 mm (3.94″) Probe | GreyStone/Finland |
| 9 | AVDTMR400 | Duct Air Velocity Transmitter, Display, 0-2/10/20 m/s, 0-400/2000/4000 fpm Selectable, 0-50 C (32-122 F), Relay, 400 mm (15.75″) Probe | GreyStone/Finland |
| 10 | AVDTMXM | Duct Air Velocity Transmitter, Display, Modbus, 0-2/10/20 m/s, 0-400/2000/4000 fpm Selectable, 0-50 C (32-122 F), 200 mm (7.87″) Probe | GreyStone/Finland |
| 11 | AVDTMXM100 | Duct Air Velocity Transmitter, Display, Modbus, 0-2/10/20 m/s, 0-400/2000/4000 fpm Selectable, 0-50 C (32-122 F), 100 mm (3.94″) Probe | GreyStone/Finland |
| 12 | AVDTMXM400 | Duct Air Velocity Transmitter, Display, Modbus, 0-2/10/20 m/s, 0-400/2000/4000 fpm Selectable, 0-50 C (32-122 F), 400 mm (15.75″) Probe | GreyStone/Finland |