1. A counter to count the quantity of objects in a single batch and the number of batches, and can also be used as a length meter. 2. Compatible with encoder, length counting wheel, proximity switch, photoelectric switch, optical sensor, and capacitive switch. 3. NPN and PNP sensor input switchable. Features 4 input modes and 6 output modes. 4. Alarm value can be set for relay output. Dual 4-digit LED display. 5. Widely used in chemical, machinery, and light industry applications. Model: FH4-4CRNB Application Range: Machinery, light industry, electronics, food, packaging, leather, and textile industries. Function: Counting, length measurement, automatic control alarm, and loop alarm. Input: Pulse Signal: Square Wave and Sine Wave: 5 H 30V, 0 L 2V, rising edge active Input Impedance: 10 k Counting Speed: 30/5000 CPS Counting Range: -1999 to 9999 Preset Range: 0.001 to 9999 Accuracy: 0.1% F.S Output: 1 Relay Contact Output Power Supply: 90260V AC/DC Auxiliary Power: 24V DC Operating Temperature: 050C Storage Temperature: -1060C Operating Humidity: 3585% RH Parameter Retention Time: 10 years Insulation Resistance: 10 M Power Consumption: 5W Trigger Edge: Rising edge active Panel Cutout Size: 45 x 45mm / 1.77 x 1.77 inch Item Weight: 106.1g / 3.74 oz Type: 4-digit Counter Category: Electrical Color: Black Material: Plastic Dimensions: 48 x 48 x 80mm / 1.89 x 1.89 x 3.15 inch Package Contents: 1 x Counter 2 x Bracket 1 x User Manual (English) Note: Light and display differences may cause slight color variation between the product image and actual item. Measurement allows an error of 13 cm.