Excavator Parts for Monitor 309-5711 525-1721 He00525-1721

Parameter	309-5711	525-1721	HE00525-1721
Operating Voltage	DC 24V (32V max/18V min)	DC 24V (34V max/17V min)	DC 24V (34V max/17V min)
Display Type	5.7-inch LCD (TN panel)	7-inch TFT LCD (touchscreen)	7-inch TFT LCD (multi-touch)
Resolution	640×480 pixels	800×480 pixels	800×480 pixels
Visibility	Sunlight-readable (500 cd/m²)	Sunlight-readable (700 cd/m²)	Sunlight-readable (700 cd/m²)
Protection Rating	IP65 (cab-mounted)	IP67 (cab-mounted)	IP67 (cab-mounted)
Operating Temperature Range	-30℃ ~ +70℃	-40℃ ~ +80℃	-40℃ ~ +80℃
Vibration Resistance	≤15g (10–2000Hz)	≤20g (10–2000Hz)	≤20g (10–2000Hz)
Communication Protocol	J1939 + CAN 2.0B	J1939 + CAN FD	J1939 + CAN FD
Power Consumption	≤15W	≤20W	≤20W
Interface Compatibility	CAT 320D/323D ECU/ECM	CAT 325D/330D/336D/345D ECU/ECM	CAT 325D/330D/336D/345D ECU/ECM
Input/Output (I/O) Ports	8 digital inputs / 4 analog outputs	12 digital inputs / 6 analog outputs	12 digital inputs / 6 analog outputs

Screen protection:
- 309-5711: Anti-glare LCD coating (scratch-resistant);
- 525-1721/HE00525-1721: Tempered glass touchscreen (hardness 7H) with anti-fingerprint/anti-glare treatment, resistant to cab dust and accidental contact.
Sealing & environmental resistance:

All models feature IP65/IP67-rated sealing with rubber gaskets, preventing water/dust ingress into internal circuits (critical for outdoor construction/mining); internal components are corrosion-resistant (nickel-plated connectors) to withstand high-humidity cab environments.
EMI shielding:

Integrated electromagnetic interference (EMI) shielding layer to resist interference from the excavator’s hydraulic pumps and electrical systems, ensuring stable data display and communication.
Service life:
- 309-5711: 8,000+ operating hours (3–4 years of construction use) with ≤2% performance degradation;
- 525-1721/HE00525-1721: 7,500+ operating hours (2–3 years of mining use) with ≤2% performance degradation.

Diesel Engine/