Topcon Construction Laser RL-H4C



  • Wide Working Range for All Type of Projects
  • High Accuracy ±10” (±1.5mm@30m, ±1/16in.@100ft.)
  • Easy Operation
  • Slope Matching Capability
  • 3 Power Sources
  • 100h/60h Long Battery Life*
  • Large Dual Handles
  • IP66 Dust/Water Protection
  • LS-80L Long-range Sensor
  • Stackable Carrying Case

* 100 hours with alkaline batteries, 60 hours with Ni-MH rechargeable battery

800m (2,620ft.) Working Diameter ±10 Arc-seconds Accuracy

 The RL-H4C provides horizontal accuracy of ±10 arc-seconds (±1.5mm@30m, ±1/16in. @100ft.) across the 800m (2,620ft.) area in diameter. This is the widest working range in its class. General construction projects – grading, excavating, concrete work for foundation and footing, and other exterior works – are perfect applications for the RL-H4C.

800m area in dia,eter

Single-axis Manual Slope.

Slope matching feature allows for easy grade setting using two arrow buttons. Simply press a button to start tilting the laser, and press it once again when the sensor receives laser on grade.


Superior Stability in Toughest Jobsites

Unlike the pendulum compensators, Topcon’s electronic self-leveling mechanism provides a more stable laser even at job sites subject to vibration. If the RL-H4C is jarred or tilted while rotating, its HI Alert system warns the operator by three flashing LED and a sensor’s icon to prevent false readings.

LS-80L Long Range Laser Sensor

New laser sensor LS-80L offers increased working range* even with other Topcon rotating lasers. It indicates the laser beam position with two LCDs on both sides plus audible tone. The LCD icons also notify the HI Alert and Low Battery warnings of the RL-H4C laser.
* Approximately 20 percent increase.


Stackable Carrying Case

New carrying case offers improved protection and more capacity for
additional accessories. Multiple cases can be securely stacked, saving
space for storage and transportation.

One case can contain the following accessories:
  • Level sensor x 2 ea.
  • Sensor holder 6 x 2 ea.
  • D/LR20 battery x  4 ea.
  • AA/LR6 battery x 11 ea.
  • BT-74Q Ni-MH battery pack x 1 ea.
  • AD-15AC/DC converter x 1 ea.
  • LS-B10(W) MC laser receiver x 1 ea.
  • User manual

Focusing on Durability

Durability and long life of Topcon lasers are ensured through extensive testing under extreme conditions. Environmental tests for the RL-H4C include temperature, humidity, vibration, shock, drop, dustproof, and waterproof, making it the most rugged and reliable rotating laser.

Dustproof: IP6x
Shuts out powder dust of 75μm (0.075mm) in size

Waterproof: IPx6
Withstands powerful water jets from all directions

RL-H4C Packages

RL-H4C Dry-cell Battery Package
  • RL-H4C Laser
  • LS-80L Sensor
  • Sensor Holoder 6
  • D/LR20 Battery x 4
  • DB-74 Battery Holder
  • User Manual
  • Carrying Case
RL-H4C Rechargeable Battery Package
  • RL-H4C Laser
  • LS-80L Sensor
  • Sensor Holder 6
  • BT74-Q Ni-MH Rechargeable Battery Pack
  • DB-74C Battery Holder
  • AD-15 AC/DC Converter
  • AA/LR6 Battery x 2
  • User Manual
  • Carrying Case


Working Range (Diameter) 800m (2,620ft.) w/LS-80L sensor
Horizontal Accuracy ±10″(±1.5mm@30m,±1/16in.@100ft.)
Self-Leveling Range ±5°
Slope Single-Axis, Manual Slope Matching
Laser Source Red Laser Diode, 635nm (Visible)
Laser Class CDRH (FDA) Class IIIa / IEC Class 3R
Rotation Speed 600rpm
HI Alert Warning on both of RL-H4C and laser sensors
Low Battery Warning Warning on both of RL-H4C and laser sensors
Dust and Water Protection IP66 (IEC 60529)
Operateing Temperature -20℃ to +50℃(-4°F to +122°F)
Dimension 177(L) x 196(W) x 217(H) mm (7.0(L) x 7.7(W) x 8.5(H)in.)
Weight 2.4kg (5.3 lbs) including four D/LR20 batteries
2.6kg (5.7 lbs) including BT-74Q rechargeable battery
Power Supply* Four D/LR20 dry-cell batteries
BT-74Q rechargeable battery pack (Ni-MH 7000mAh)
AC 100V to 240V
(AD-15 AC/DC Converter and BT-74Q Battery Pack required)
Operating Time at 20°C (68°F) Approx. 100 hrs w/alkaline batteries
Approx. 60 hrs w/BT-74Q rechargeable battery
Recharging Time for BT-74Q Approx. 13 hrs

* RL-H4C “Rechargeable Battery Package” includes all accessories necessary for three power sources.

LS-80L Laser Sensor Specifications
On-Grade Precision High ±1mm (±0.04in.)
Normal ±2mm (±0.08in.)
Grade Information Channel 9 Channels (plus high/low out of range)
Beam Detection Width 50mm (2.0in.)
Display LCD on each side
Buzzer Loud/Low/OFF
Icons for RL-H4C Warnings HI Alert, Low Battery
Battery Level Indicator LCD Icon
Auto Shut-off Approx. 30 minutes
Dust and Water Protection IP66 (IEC 60529)
Operating Temperature -20°C to +50°C (-4°F to +122°F)
Dimension 146(L) x 76(W) x 26(H)mm (5.7(L) x 3.0(W) x 1.0(H)in.)
Weight 190g (6.7oz.) including two AA/LR6 batteries
Battery Two AA/LR6 dry-cell batteries
Operating Time at 20°C (68°F) Approx. 120 hrs w/alkaline
Laser Sensor Lineup
Sensor LS-80L LS-90 LS-80A LS-80B
Working Range (dia.)* 800m (2,620ft.) 700m (2,230ft)
On-grade Precision ±1mm/±2mm
Grade Information Channel 9 9 9 5
Display LCDx2 LCDx2+LED LCDx2 LCDx1
Warning Icons
Bubble Tube n/a Y n/a n/a
Remarks Standard for RL-H4C Option for RL-H4C

* When used with RL-H4C laser. Working range varies depending on the rotating laser to be used.

Call / Whatsapp Us

H/P :
+6012-695 9998 (Mr.Yap)
+6012-225 6988 (Mr.Jackson)

Email :