Clamp-on Sensors for the CLAMP LOGGER 3636-20, and MICRO HiCORDER 8205-10/8206-10 For input up to AC 500A, select our Model 9291, and for smaller currents of up to AC 100A, select Model 9298. Both sensors are designed with a safety barrier to protect the user from being in direct contact with live conductors and completely meet all CE marking requirements.