Browse the seven listed configurations. Reference equipment and offered-product specifications are shown separately. This collection also includes a damper actuator.
Images illustrate product families; the specifications identify each listed configuration.
Reference equipment: E+E EE300Ex-HT6SEXBGFXDXAT/MTx024UW001

Split-type Temperature & Humidity Transmitter
LFH713-A4321B
| Model | LFH713-A4321B |
|---|---|
| Output | 4~20mA (2-wire) |
| Accuracy range | ±3%RH (±0.3℃) |
| Temperature range | -20~60℃ |
| Display | LCD (no backlight) |
| Explosion-protection type | Intrinsically safe: Ex ia ⅡC T6/T4 Ga |
| Marking | LEFOO |
| Front cover | Manganese-oxide front cover, as specified |
| Split cable length | 2 metres |
Reference equipment parameters
| Reference configuration | Split probe type |
|---|---|
| Relative humidity | 0~100%RH |
| Humidity note | -15~40℃, ≤90%RH |
| Temperature | -20~80℃ |
| Power supply | 28VDC |
| Maximum current per channel | 20mA |
| Output | 2*4-20mA, 2-wire |
| Protection | IP65 |
Reference equipment: Siemens QFM2160 duct temperature and humidity sensor

Duct Temperature & Humidity Transmitter
LFH302-2A4A421
| Model | LFH302-2A4A421 |
|---|---|
| Accuracy range | ±2%RH (0.2℃) |
| Humidity output | 4~20mA (2-wire) |
| Temperature output | 4~20mA (2-wire) |
| Temperature range | -20~60℃ |
| Display | LCD |
| Marking | LEFOO |
| Sealed protective sleeve fitted | No |
| Remarks | None |
Reference equipment: Siemens QBM81-3 / QBM81-5 / QBM81-10 / QBM81-20; differential pressure switch / differential pressure transmitter, as listed

Differential Pressure Switch
LF32-05
| Model | LF32-05 |
|---|---|
| Pressure range | 50-500Pa |
| Pressure setting | 50Pa |
| Top cover | Grey |
| Trademark | LEFOO |
| Cable gland | P11 |
| Accessories supplied | Yes |
| Environmental requirements stated | Meets RoHS environmental requirements; meets Reach requirements |
| Base marking | No text |
| Cover marking | LEFOO |
| Packaging | 50 units per pack + unmarked white box |
| Medium | Air |
| Accessory hose | 1.5 metres |
| Connecting tubes | 2 |
| Mounting screws | 5 |
| Additional connector | Female spade terminals |
| Action adjustment | Vertical adjustment |
Reference equipment: Honeywell HSH-DM / HST-D series duct temperature and humidity sensors

Duct Temperature & Humidity Transmitter
LFH10A2-3V10V1020
| Model | LFH10A2-3V10V1020 |
|---|---|
| Accuracy range | ±3%RH (0.3℃) |
| Humidity output | 0~10VDC (3-wire) |
| Temperature output | 0~10VDC (3-wire) |
| Temperature range | -20~60℃ |
| Display | None |
| Marking | LEFOO |
| Documents | Certificate of conformity; Chinese instruction manual |
Reference equipment: Huba Control 506 pressure sensor / transmitter

Pressure Transmitter
LFT2800
| Model | LFT2800 |
|---|---|
| Range | 0-10 kPa |
| Output | 4~20mA (2-wire) |
| Operating voltage | 8~36VDC |
| Accuracy grade | 0.25%F.S |
| Electrical connection | Large Hirschmann connector |
| Pressure connection | G1/8 |
| Lead length | 1 metre |
| Medium | Water |
| Operating temperature | -20~85℃ |
| Marking | LEFOO |
| Housing | ’25 version |
| Remarks | None |
Reference equipment: Johnson Controls P499VBS-404C-C pressure sensor; P499VBH-404C -401C transmitter - ABS/ACH

Pressure Transmitter
LFT2100
| Model | LFT2100 |
|---|---|
| Range | 0-10 kPa |
| Output | 4~20mA (2-wire) |
| Operating voltage | 8~36VDC |
| Accuracy grade | 0.5%F.S |
| Electrical connection | DIN43650C (small Hirschmann connector) |
| Pressure connection | G1/2 |
| Lead length | 1 metre |
| Medium | Water |
| Operating temperature | -20~85℃ |
| Marking | LEFOO |
| Remarks | None |
Reference equipment: Belimo LM24A-SR / NM24A / GM24A-SR; on/off and analogue damper actuator references

Electric Damper Actuator
LFZ-0624-KF
| Model | LFZ-0624-KF |
|---|---|
| Torque | 6NM |
| Power supply | 24VAC/DC |
| Control signal | On/off control |
| Auxiliary switches | 2 sets |
| Marking | LEFOO |
| Instructions | Chinese instruction manual |
The offered configuration listed here uses on/off control. Match the required control signal and torque before selecting an alternative.
For product enquiries, contact Semicon Global Tech and include the reference model and required configuration.
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