Quotations are hereby invited for supply and delivery of digital earth resistance testers. Specifications: Rechargeable: • Must have a built-in rechargeable battery; • Current Clamps. Test methods: • Must be able to perform 2, 3, and 4-pole testing. Must also supports Attached Rod Technique (ART) and stake less testing when used with clamps (clamps must be supplied). Noise rejection: • Must automatically rejects noise up to 40 V peak-to-peak. Variable frequency: • Must have user-selectable test frequencies (94, 105, 111, and 128 Hz) to find the most effective frequency and minimize interference. Safety rating: • Rated CAT IV 100 V and has an IP54 ingress protection rating, making it suitable for outdoor and harsh environments. Display: • Backlit LCD or OLED for visibility in all lighting conditions. Data Transfer: • Bluetooth or USB connectivity for data transfer and real-time monitoring via apps or PCs. (ЮАР - Тендер #69176139)