How do you connect it to read engine temperature?

Remove the spark plug. Place the copper washer over the threaded portion of the plug and screw the plug back into the cylinder head. Tighten the plug with the appropriate torque.

Does this work with 2-cylinder engines, or just singles?

It works with: 2 stroke: 1 cylinder / 2cylinder / 3cylinder 4stroke:1 cylinder / 2cylinder / 3cylinder / 4cylinder / 5cylinder / 6cylinder / 8cylinder /12cylinder/16cylinder 6 stroke:2 cylinder Some 4 stroke 1 cylinder engine is 1P1R,the setting is the same way as the 2 stroke 1 cylinder engine.

How long are the wires on the temperature sensor ring cables? Only the length of the tach wire is shown.

The length of probe sensor wire is 58.5cm(approx.23.03 inches)

How do I know which model to get? The connections look different.

we think your model is HM035A-TS003, the temp sensor can measure the engine temperature especially easy to put it into engine radiator.

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RL-HM035A-TS001 Digital LCD Hours Tachometer,Engine Oil Temperature Gauge

RL-HM035A-TS001 Digital LCD Hours Tachometer,Engine Oil Temperature Gauge

Product ID: 487304088

Details

Brand
Runleader
Item Weight
60 g
Manufacturer
Ningbo Run Co.
Material
Glass Metal
Number of Items
1

⏱️0-999.99 hrs TOT & JOB tracking

⚙️0-25,000 RPM real-time & alert

🌡️-20°C to 300°C temp monitoring

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Description

⚡ Stay ahead of engine wear with real-time insights and alerts!

ADAPTIVE BACKLIT DISPLAY - Green and red backlights with auto, always-on, or manual modes provide clear visibility day or night while signaling critical alerts.
DYNAMIC RPM MONITORING ALERTS - Real-time RPM display with customizable alert thresholds up to 25,000 RPM keeps your engine performance optimized and safe.
PRECISION ENGINE RUNTIME TRACKING - Dual TOT & JOB hour counters with programmable previous hours ensure you never miss a maintenance window.
EFFORTLESS INSTALLATION DURABILITY - Plug-and-play one-wire spark plug connection, water and shock resistant design, plus replaceable battery for long-term reliability.
COMPREHENSIVE TEMPERATURE SURVEILLANCE - Water, oil, and coolant temps tracked with max temp memory and alert system to prevent costly overheating.

The Runleader Digital Tach Hour Meter RL-HM035A-TS001 is a compact, multi-functional gauge designed for gas engines across lawn tractors, generators, snowmobiles, and more. It accurately tracks total and job-specific engine hours, monitors RPM up to 25,000 with alert capabilities, and measures water, oil, and coolant temperatures with high precision. Featuring customizable backlighting and easy installation, it empowers proactive maintenance and engine protection, backed by reliable technical support and a 2-year warranty.

Specifications

ASIN	B0B24FFJMQ
Best Sellers Rank	#13,445 in Automotive ( See Top 100 in Automotive ) #3 in Automotive Tachometers
Brand Name	Runleader
Customer Reviews	4.0 4.0 out of 5 stars (1,231)
Item Weight	60 g
Manufacturer	Ningbo Jiangbei Run Leader Electronics Co., Ltd
Material Type	Glass, Metal, Plastic
Model	RL-HM035A-TS001
Part Number	HM035A

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฿3369

Duties & taxes included

In stock

Sold byAmazon ThailandDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Thailand.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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